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The Formation of a Persecuting Society: Authority and Deviance in Western Europe 950-1250

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The tenth to the thirteenth centuries in Europe saw the appearance of popular heresy and the establishment of the Inquisition, the expropriation and mass murder of Jews, and the propagation of elaborate measures to segregate lepers from the healthy and curtail their civil rights. These were traditionally seen as distinct and separate developments, and explained in terms of the problems which their victims presented to medieval society. In this stimulating book, first published in 1987 and now widely regarded as a a classic in medieval history, R. I. Moore argues that the coincidences in the treatment of these and other minority groups cannot be explained independently, and that all are part of a pattern of persecution which now appeared for the first time to make Europe become, as it has remained, a persecuting society.
In this new edition, R. I. Moore updates and extends his original argument with a new, final chapter, “A Persecuting Society”. Here and in a new preface and critical bibliography, he considers the impact of a generation’s research and refines his conception of the “persecuting society” accordingly, addressing criticisms of the first edition.

240 pages, Paperback

First published January 1, 1988

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About the author

R.I. Moore

17 books21 followers
Robert Ian Moore was a British historian who was Professor Emeritus of History at Newcastle University. He specialised in medieval history and wrote several influential works on the subject of heresy. Moore was a pioneer in the UK of the teaching of world history to undergraduate students, published numerous papers on comparative world history, and was series editor of the Blackwell History of the World.

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Profile Image for Jan-Maat.
1,684 reviews2,491 followers
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December 12, 2019
This is a nice, if completely joyless, companion piece to Medieval Heresy. It's an attempt to answer why medieval society began to persecute heretics, Jews and Lepers (amongst others), essentially anybody different. One of the principal drivers for Moore is the attempt to gain political power on the part of the persecutors hence the ringleaders in anti-Jewish riots tended to be those most indebted to Jewish lenders, and why in some cases the protectors of Jewish communities might include the religious and civil authorities who depended on their medieval style high finance. Lots of interesting material here, including the reinterpretation of the brief life of little Saint Hugh (otherwise known for his appearance in one of The Canterbury Tales)., who Moore argues was most likely the victim of sexual and physical abuse at the hands of his parents who then dumped him in a well once he died, the parents then blamed the Jews for their own crime and the little saint was then to emerge as a reminder of the intrinsically bizarre and horrible religious practises of the Jews, which becomes then one of the ways in which anti-Semitism was built into and memorialised in local culture, if not with a nod to Chaucer even emergent national cultural communities.

Power in Moore's thesis, becomes intrinsically linked with persecution rather than the kind of roots we prefer to imagine for our democratic aspirations of consultation and consensus. Instead the foundations of western European culture for Moore, include the mass-manipulation of people against the vulnerable and marginal for personal gain.
Profile Image for Katie.
508 reviews337 followers
August 22, 2013
Sometimes I think it is too easy for the study of history to turn into an endless series of over-corrections. Some flaws are found in a traditional narrative, they're picked up by a historian with a particularly open sense of imagination, and they're woven into a new narrative, often situated at the opposite end of the ideological spectrum. It's not a bad thing in and of itself: it's how the process is supposed to work, and ideally it means that eventually these oscillations to either side get small enough to begin to zero in on the truth. Unfortunately, sometimes they get bigger, false dichotomies get set up, scholars on each side dig some trenches, batten down the hatches, and start writing prickly academic articles at each other.

The Formation of a Persecuting Society self-consciously places itself in this sort of environment, and is very aware that it's about to ruffle some feathers. The medieval response to heresy has always been a touchy subject. Since the Reformation it's been characterized by many as the classic example of medieval close-mindedness and lack of Enlightenment (with a capital E); more recently, historians have noted that the medieval version of the inquisition may have saved more lives that it cost, by transferring the fickleness of mass violence into a trial that was at least somewhat controlled and based on the rule of law. It offers up two drastically different views of what medieval society was, and how its relationship to the present should be conceptualized.

My favorite thing about Moore's book is that it never turns into a polemic. It very easily could have (and some of the books it has inspired, such as Mark Pegg's A Most Holy War: The Albigensian Crusade and the Battle for Christendom, embrace that polemic and dive right in). Moore pushes back on the recent idea that the medieval persecution of heretics was simply an inevitable response to the flowering of heresy in the 12th century and a welcoming tempering of the resulting popular demand for violence, but he does so in a way that - at least most of the time - is subtle and incisive. He doesn't feel the need to insist that everything that everyone has said before is wrong. This can, unfortunately, be kind of rare.

R.I. Moore's basic premise is this: suggesting that the increased persecution of heresy in the 12th century resulted from the increased presence (an influence) of heretics is the wrong way to approach the issue. Instead, he argues that the eleventh and twelfth centuries marked a period of drastic change in almost every realm of life, a process which naturally engendered quite a bit of fear, concern, and suspicion. Amidst this tumult, the medieval church (and the medieval state) were both in the process of growing, centralizing, and defining what exactly they were as institutions. This process of centralization, while it created all of the lovely things associated with the twelfth century renaissance, also created an atmosphere and philosophy of persecution. To centralize and to unify, he argues, also means to exclude. When medieval clerics came upon something they didn't understand, he argues, they tended to define it as the other, and feared that its spread could bring down the whole operation altogether. This - quickly and probably not intentionally - led to the rise of exaggerated claims of heresy and dissension that were probably a part of the clerical imagination as much as actuality.

It's not a perfect book by any means. The claims are sweeping for a 150 page essay, and they're nearly always suggested more than proved. Anthropological evidence from modern-day Africa is inserted rather awkwardly, without adding much of substance to the argument. There are attempts to include the persecution of lepers and Jews along with heretics which don't really work: they're very interesting asides, but lepers were not excluded from medieval society in a way that's analogous to heretics and lumping them together (and even claiming that they're "essentially identical") is very misleading. There is an odd claim near the end that most clerics thought that Judaism was actually the biggest threat to the unity of Christianity, a claim that is hugely unsupported and has a conspiracy-theory vibe that's at odds with the rest of the book. The degree of difference between Carolingian and twelfth century attitudes, particularly the presence of anti-Semitism, is often exaggerated. The use of evidence tends to be a bit cherry-picked, other authors have used it to draw drastically different conclusions (see Communities of Violence: Persecution of Minorities in the Middle Ages).

Despite all of these weaknesses, I still quite liked the book for two reasons: (1) I think he's right in his big-picture assertion, even if I'd disagree with lots of the details. One can't really be a heretic without a clear, definitive authority to define orthodoxy, and that's not something that emerged until the 11th and 12th centuries. The medieval conception of cultural unity can be lovely, but it also inevitably excluded people, and that's something that should be openly acknowledged. I think the broad assertion that the 12th century didn't only bring more heretics, but also brought a Church that was increasingly concerned about their presence and often inflated their potential as a threat as a result, is absolutely correct. (2) More personally, I like that this argument was made, at least about 80% of the time, with moderation. The inquisition is usually painted as either a group of close-minded monsters or as a group of mostly-benevolent administrators, and I like the Moore paints them as a group of well-intentioned people whose concerns and fears resulted in actions and decisions that often had very damaging results.
Profile Image for Jonfaith.
2,145 reviews1,745 followers
December 9, 2014
It is the argument of this that however the tremendous extension of the power and influence of the literate is described, the development of persecution in all its forms was part of it, and therefore inseparable from the great and positive achievement with which it is associated. Whether they might have taken place without it is another question, and one which, perhaps thankfully, historians are not called upon to answer.

The above is how Professor Moore concludes this harrowing taxonomy on the persecution and peril inflicted upon heretics, Jews, lepers, homosexuals and prostitutes across Europe during the High iddle Ages. The period chronicles cited indicate a sort of change of attitudes and stiffening of response around the 11th century. The narrative ascribed to each of these offenses appeared very similar. Around p. 100 we begin to probe for causality. Moore then broaches whether these events constitute either a nascent form of Durkeheimian deviance or a Webernian consolidation of central power. Without a doubt the dislocation of the populace form the feudal/manorial to the urban really disoriented people. Couple that with the emerging cash economy and all bets were off. The author gauges the limits of available information and won't speculate further. Then citing Foucault he does offer another thesis about the threat posed by Jewish scholarship. This learned community was thus a rival to the new literate (Christian) class which were becoming the stewards of power. This last argument isn't quite convincing. The rich bibliography made this an enjoyable excursion on a winter evening.
Author 6 books253 followers
March 22, 2018
Moore makes a sound argument for the roots of "Western" ideas of persecution in nodes of power and authority, rather than in some incoherent "mob" rule. Writing against self-righteous historiographical and political trends in historiography that depict all the terrible bits of the European cultural legacy as emanating from the unruly rabble, Moore shows that it was in fact institutional at its root.
His approach is threefold, focusing mostly on Jews, lepers, and gay peeps, to a lesser extent. His argument is brutally simple: no one saw any of these groups as a threat until they were basically scapegoated into fearsome universals that threatened our very way of life. Sounds familiar, right?
Moore points out the persecution and its palliative (back then, death, more familiarly now death and segregation, the latter thrown in to keep up appearances) were part of the structures of authority and born out of political rivalries rather than any notion of popular threat. Indeed, Jews, for example were very present and not fussed over at the beginning of the period in question,but it was local lords' propensity for wanting money and property and thus needing excuses to confiscate it, that started the ball rolling. Lepers were objects of charity until it became a marker, at first within elites, of discriminatory need.
It thus boils down to imaginary threats making offense against abstractions, highly defensible abstractions (like the church), being the root cause of it all. More simply, if your threat is imaginary, it is all the easier to beat, and makes for effortless victories, all the easier to crow about.
Part, too, of a larger shift of highly democratic, personal justice being mooted and militated against by power structures that think in universals and generalities, hardly healthy in any time.
Profile Image for Domhnall.
459 reviews375 followers
April 10, 2014
The 2000 edition of this book, originally published in 1987, contains two chapters responding to earlier criticism and willingly accepts some corrections, in at least one case at the expense of an important argument. So this author is not opinionated and is careful about the claims made. Moore acknowledges that violence and persecution are pretty nearly universal, but his thesis is that in the Twelfth Century, the emerging nation states of Western Europe, and also the papacy, established persecution as a distinct feature of the way both secular and church authorities enforced central control at the expense of more traditional, community based power structures.

As an example, he notes that the practice of trial by ordeal might appear objective, but depended on the judgement of a group of community figures which could be very subjective indeed. In trial by water, they might find reasons to suggest that the suspect who sank (implying innocence) had floated long enough to be guilty. In the same way, trial by holding hot irons allowed curious debates about whether the hands were healing properly (innocent) or not (guilty). History insists that replacing trail by ordeal with trial by properly educated officials is a move to greater justice, a triumph of Reason over superstition, but as Moore also notes, their operating methods used Reason in ways that had as little to do with objectivity as the popular ordeals they replaced and there was conflict between the two types of judgement. He cites examples of communities who refused to allow their decisions to be overturned by bishops or lords, not out of zealotry towards heretics for example, but to prevent their traditional powers from being encroached upon by external authorities.

The persecuting authorities actively sought out targets for their exhibitions of power, if necessary by inventing them, or by taking a real but modest infringement and amplifying it into a major cause. In the 12th century, the three major categories were Jews, heretics and lepers. There was little if anything about their victims to account for the level of persecution and the inquisition process entailed devising a remarkably unpleasant caricature and then straining all reason to apply this to the subject. Typically this would include drawing on ancient sources, including the bible and the early church fathers, for authority, but as Moore observes, the answers they drew from these ancient authorities were entirely the product of their style of questioning. When the inquisitors sought to show that they were dealing with things predicted by the Book of Revelations, for example, they were starting out from that biblical source and then seeking evidence that could, with appropriate ingenuity, be made to fit.

In short, the trials and persecutions revealed little about their targets and a great deal about the persecutors. In later centuries, targets multiplied. Moore cites Scribener, who in a 1996 essay showed how in 16th Century Germany, beggars, gypsies, spendthrifts, discharged soldiers and others were made vulnerable by being classified as outsiders. And Moore notes that the modern state has acquired a capacity to persecute beyond the dreams of the most ambitious mediaeval ruler. (p154)

Moore points out that persecution has if anything increased and not reduced with the passage of time. He considers that it is used by centralizing authority as a means to displace devolved and popular institutions and to interfere directly in every aspect of daily life. The book is chilling partly for its account of the distant past, but more so because it is so directly relevant to our own times. [He does not give specific examples, but I wonder how helpful it might be to use Moore's model in discussing Stalin's purges or the McCarthy era moral panic of the USA in the Fifties.]
Profile Image for Caleb Emmons.
35 reviews
January 19, 2025
Moore and Nirenberg are lowkey beefing, yet are so polite and complimentary. Moore really identifies Nirenberg as his “most incisive critic” and almost immediately is like “but he do got that brilliant account and analysis tho ngl.”


*I paraphrased a little on that quote
Profile Image for Benjamin Fry.
8 reviews
January 3, 2014




R.I. Moore is a leading British academic of Medieval History. Over a career that has spanned forty years he has published numerous works including; The Birth of Popular Heresy (1975), The Origins of European Dissent (1977), and The First European Revolution c.970-1215 (2000). In recent years Moore has been the Emeritus Professor at the University of Newcastle and is working on a new publication which promises to investigate the War on Heresy from the Eleventh to Fourteenth centuries. Considering his bibliography it should be no surprise that his research interests lay in the late medieval period, with a particular emphasis on social and cultural history. The Formation of a Persecuting Society is the result of years of research within this area.

I came across this book during the first year of my history degree. It instantly became one of the most enjoyable and informative books that I had ever read. The style of Moore’s prose is such that it is easily digestible and suitable for the student who may not yet be prepared for the dry academic texts that make up the bulk of their reading lists. That said Moore’s book is not just for the student or academic. Anyone with more than a passing interest in history will find The Formation of a Persecuting Society an enjoyable read that challenges certain historical perceptions of how our present society began.

In the Formation of a Persecuting Society Moore challenges the previously held notion that the persecutions of heretics, Jews, and lepers (among others) of the Twelfth and Thirteenth centuries were pursued independently of each other. Instead he suggests that the persecutions of these minorities could not possibly have been explained separately because the rhetoric and mentalities of the persecutors were too alike, with similar patterns repeated in every case.

Central to the books argument is that the persecutions were a result of the growing monarchies, both secular and Papal, in the Eleventh century who were beginning to assert themselves in a more dominant way. If we first consider the early medieval period, Moore shows that the legal codes of that society dealt primarily with the individual. For example, the punishment for criminal activity was resolved between the parties involved and often resulted in some form of monetary payment, (http://www.fordham.edu/halsall/source/salic-law.html). Furthermore, order is maintained by the community, family and clan, and not through a distant ruler.

In the process of political centralisation late medieval rulers developed a system of state apparatus which included the appearance of specialised groups for the enforcement of law. These included, but were not restricted to, Judges and Police forces. The law itself ceased to be controlled by the mediation of clan and family and instead began to be imposed from above, from a centralised authority who granted verdicts of innocence or guilt in accordance to new codes. This transition, as Moore suggests, had severe repercussions for minorities groups in the Twelfth and Thirteenth centuries. He shows this by arguing that medieval rulers began to assert their fledgling authority by creating victimless crimes which were, in essence, crimes against society, state, and morality. These crimes were actively sought out and the alleged criminals were punished through the new institutions, like the inquisition, even though no individual expressed a grievance.

The transition from a passive to a persecuting society can be seen in the increase in secular and papal legislature against minorities. The Fourth Lateran council of 1215, perhaps the most important of the papal councils, was the culmination of a century of anti heresy legislation. The Council was designed to reorganise and reinvigorate the clergy, and put to paper the canons and precepts of the newly reformed Orthodox Church. What is essential to the argument that Moore puts forth is that the Forth Lateran Council of 1215 laid down the mechanism of persecution and created a range of sanctions against those convicted which proved to be adaptable to a much wider variety of victims. Therefore the sanctions originally designed for heretics could just as easily be adapted for Jews, lepers, sodomites and prostitutes and other minority group that did not fit in with the orthodox view of society.

The information presented in the Formation of a Persecuting society is concise and well written and has stood the test of time. It has had its critics, what history book has not? But it also has its supporters and it a testament to Moore’s work that it is often included in the bibliographies of modern medieval academic scholarship.
Profile Image for Tim O'Neill.
115 reviews310 followers
December 10, 2022
This has become a classic contribution to the study of medieval heresy and the Church's persecution of those it perceived as heretics. Moore seriously calls into question the traditional interpretation of the topic: that new "great heresies" arose in the eleventh and twelfth centuries and so the Church instituted inquisitions and crusades in response to this threat to its dominance. Moore argues that, in fact, there was no major change in the size or nature of dissenting and variant religious views in this period. The real change was one in the Church itself, which absorbed the newly rediscovered works of Roman jurisprudence and took on a new legalistic view of the world, then set about ordering things along more strictly delineated parameters. This meant lines between orthodoxy, acceptable variant ideas and outright dissent which had been vague and blurred, became more clearly and rigidly defined. And it also meant that by defining what lay within the boundaries of orthodoxy more clearly and rigidly, this also defined, excluded and marginalised those outside those boundaries more strictly.

The result was the establishment of processes, mechanisms and institutions to define, identify and, finally, persecute and coerce those deemed to lie outside the bounds of what was acceptable. Moore doesn't go as far as some other, later historians, who have decided that heresies like the Cathars didn't really exist and were largely the invention of Catholic theologians and inquisitors who applied their imagining to a disparate collection of unorthodox believers. But he does argue these dissenting ideas had been around in various manifestations and were only seen as a major threat to be dealt with once the process of legalistic delineation defined them as monolithic institutional rivals.

On how this process worked in relation to heretical individuals and groups Moore is generally persuasive. On its application to Jews, lepers and homosexuals, his persuasiveness is more mixed. But this study has become an important work redefining how we see this period and the second edition tackles many of the objections and counter arguments made since its first release in a very fair manner.
Profile Image for Myles.
635 reviews32 followers
February 3, 2017
Another book from the Trump Toolkit: Scapegoating 101

"We have seen how during the eleventh, twelfth and thirteenth centuries, Jews, heretics, lepers, male homosexuals and in differing degrees various others were victims of a rearrangement of Leach’s ‘internalized version of the environment’, which defined them more exactly than before and classified them as enemies of society. But it was not only a matter of definition. In each case a myth was constructed, upon whatever foundation of reality, by an act of collective imagination. A named category was created – Manichee, Jew, leper, sodomite and so on – which could be identified as a source of social contamination, and whose members could be excluded from Christian society and, as its enemies, held liable to pursuit, denunciation and interrogation, to exclusion from the community, deprivation of civil rights and the loss of property, liberty and on occasion life itself."
135 reviews45 followers
April 2, 2010
Demolishes the old truism (which I had never encountered) that persecution of heretics, lepers and Jews began in earnest in the 11th and 12th centuries as a result of the concurrent increase in population and power of the same. Argues instead that the practice of persecution was the result of a new European mindset to expel the Other and thereby protect the integrity of the community. Not entirely borne out, and actually blatantly contradicted in the last few pages of the text, which argue that persecution of Jews in England occurred as a result of the particular Christian vulnerability (cultural, intellectual, political, economic) vis-a-vis the Jews.
Profile Image for Jackson Cyril.
836 reviews92 followers
October 24, 2017
Hoskins' brilliant thesis on the 'twelfth century renaissance' is well known. Moore studies the negative effects of the rise and spread of literacy during this period. He argues that while governments certainly persecuted populations prior to this period, it was not until the 12th century (Lateran III and IV are key here) that Western Europe developed into a society which began to continuously persecute people based on a variety of vaguely defined censures (Moore begins his work by quoting Montesquieu's acerbic dismissal of these censures). Initial victims included Jews, lepers and gay people-- and we can now add others to this mix. A penetrating study.
Profile Image for Ben.
15 reviews
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April 6, 2025
A curious (and short) book arguing that it was not the intolerance of the masses that invented Europe as a "Persecuting society," but a power grab by bureaucrats, kings, and the central church. Moore comes across as a real anarchist in his condemnation of Europe's bureaucrats, class traitors of sorts who handed their new masters the persecutory apparatus to consolidate power and modernize the state. But precisely because he wishes to exonerate the masses, they are reduced to victims and unconscious followers of a collective mentality imposed from the top down.

On heretics, the argument seems convincing enough, and similar to that of Carlo Ginzburg: heresy was largely the invention of a Church increasingly concerned with social control. The everyday religious diversity characteristic of medieval europe was hallucinated as a coherent heretic threat.

On Jews, he seems to oscillate between the "middle man" theory (Jews integrated into the state's fiscal apparatus) and the collective imagination of a multi-headed monstrous enemy of heretic/jew/leper, allied with the devil. He concludes with a bizarre proposition that the Christian bureaucrats *accurately* understood Jews as a coherent threat to their social position, and a religious threat to Christianity as a whole. This argument, framed in philosemitic terms of Jewish civilizational excellence, outright proposes reading the next 900 years--up to and including the Holocaust--in terms of religious/racial war between the Jews and Christian bureaucrats. It's an unfortunate way to end the book.
Profile Image for David Austin.
4 reviews1 follower
February 4, 2020
Absolutely terrible read. Historical generalizations abound, combined with a severe lack of objective scholarship make this book not worthwhile to read. Do not buy it!
243 reviews6 followers
May 5, 2025
Priscillian of Avila was “the first Western European to be burned as a heretic” in 383 on accusation of witchcraft and Manichaeism despite the objections of Bishop Martin of Tours and the eventual excommunication of his accusers by Ambrose of Milan and Pope Siricius. While the early church worried about heresy in their writings, the example shows many church leaders were ambivalent towards seeking out heretics and especially hesitant to use violence as a means for dealing with it. The church’s response to dealing with heresy up to 1140 was on case-by-case basis with no established policy or procedure and usually lenient. The next known example of an execution for heresy in the West didn’t occur again until 1022 in Orléans when King Robert I of France had sixteen people under the influence of two canons burned as part of a larger political dispute between King Robert and Count Odo of Blois.

The reasons behind why some figures in this period such as Robert of Arbrissel were venerated by the church, while others like Henry of Lausanne were condemned despite engaging in many of the same “heretical” behaviors bespeaks to the arbitrariness of such accusations and depended often on its political usefulness. Robert of Arbissel preached clad in skins and barefoot around Britany and Anjou in the 1090s with an entourage of thieves and whores, while Henry of Lausanne had one of “the longest and most successful recorded heretical career” (19) when he overthrew and destroyed the authority of the clergy in Le Mans and remained an active heretic in Toulouse and its surrounding villages of South-west France, which required the intervention of St. Bernard of Clairvaux in 1145 to finally subdue.

Revival of heresy in the 11th century involved people denying the necessity of baptism for salvation and turning to either an overly allegorical or overly simplistic interpretation of the gospels, fueled by frustration with corrupt priests and a growing church hierarchy who cared too much about money and power, which tapped into the general feeling that the church wasn’t pure enough. At the same time, increased anti-Semitic sentiments against Jews also appeared whose paradoxical status as both legally and socially restricted in society and as the agents and serfs of the king (or local ruler) exploiting the populace on their behalf also borrowed the rhetoric of greed. New rhetoric and stereotypes began to associate them with dirtiness, sorcery, making deals with the devil, and extreme sexual licentiousness that would later be the same stereotypes used in accusations against witches hundreds of years later in the early modern period. This is also the period that witnessed the rise of the blood libel and international conspiracy in which Christian polemicists and other literati wrote stories accusing Jews across multiple nations and territories of conspiring together to kidnap and murder Christians and children. There was also a new fear and anxiety over leprosy and to a lesser extent homosexual behaviors. So why did persecution against all these groups suddenly arise?

Moore locates the origins of persecution to social changes occurring in the 11th and 12th centuries. It wasn’t just this period saw a rise in persecution, but it laid the groundwork for all future persecutions in western civilization. Unlike previous historians at the time who studied the oppression of groups marginalized in the Middle Ages separately, Moore links the persecution of heresy, Jews, lepers, and sodomites together and suggests it is no coincide that each of these group began being persecuted around the same time. He argues these new methods of persecution, stereotypes, and slanders originated with the rise of a new literate and educated class of courtiers and bureaucracy and the growth of centralized government in both the secular courts across Europe and the papacy that used persecution as a “means to extend the power and advance the interests of their masters, while consolidating their own position and undermining potential rivals (145).” In a sense, the discourse itself created the problem; all these writings and stereotypes and accusations against heretics or Jews had no real basis in reality or with heretics in terms of their size and organization tended to be greatly exaggerated in terms of how large or organized they were in reality.

Part of this process involved defining more clearly what makes a Christian. The Fourth Lateran Council of 1215 established key obligations for Christians, requiring them to confess their sins at least once a year, perform the appropriate penance, and receive the Eucharist at Easter, with failure to comply resulting in excommunication and denial of a Christian burial. The council also issued decrees against Jews, mandating distinctive dress and prohibiting them from holding public office, while setting severe punishments for heretics, including excommunication, property confiscation, and punishment by the secular authorities. Additionally, the council required secular authorities to swear an oath to eliminate heresy in their regions, with severe consequences for failure, and expected regular inspections by archbishops and bishops to uncover heresy.

“It is important not to exaggerate the novelty, the effectiveness, or the ecclesiastical character of these measures. The Lateran canon was closely modelled on the bull ad abolendam issued at Verona in 1184 by Pope Lucius III jointly with the Emperor Frederick Barbarossa. This was the first truly European-wide measure against heretics, but it was derived from a variety of precedents and procedures of the previous century or so, including the first secular legislation against heresy, chapter 21 of the Assize of Clarendon (1166) in which Henry II had forbidden help or succour of any kind to be given to those whom he had recently condemned as heretics at Oxford. . . .It was reinforced by Innocent III’s decree vergentis in senium (1199) which declared heretics liable to the same procedures and penalties that Roman law laid down for treason, and opened the way for the launching of the Albigensian crusade against the County of Toulouse in 1208 and the incorporation into secular law of increasingly severe and wide-ranging measures against heretics (8-9).”

Originally Bishops had the responsibility to deal with heretics and the typical approach was to expel the heretic from their diocese, but in practice this only bolstered the spread of heresy to other areas. Indeed, many bishops were unsure what to do with heretics and remained hesitant to participate in bloodshed, leaning towards leniency as heresy was considered “a new problem for the bishops of the eleventh and twelfth centuries (22).”

The Inquisition was founded as a means of solving the problem of ineffective clerics by bypassing the traditional church structure and employing the Dominican Friars as inquisitors serving under a papal legate sent by Gregory IX. The papal inquisition developed its basic institutional form in Toulouse during the 13th century Albigensian crusade.

“What is essential to the present argument is that Lateran IV laid down a machinery of persecution for Western Christendom, and especially a range of sanctions against those convicted, which was to prove adaptable to a much wider variety of victims than the heretics for whom it was designed (24).”

Although this book is important for its original thesis about the origins of persecution in the 11th and 12th century, it isn’t a perfect book. Many different scholars have taken issue with some part of the thesis, which Moore acknowledges in the final chapter and tries to respond to some of these criticisms. However, I felt like the lack of clarity in the writing and organization of the book was the biggest issue. From the perspective of a non-specialist like myself sometimes it feels like you’re being drowned in endless concrete examples of persecution against heretics, Jews, and other groups or long-winded discussions on medical knowledge at the time about leprosy, but without sufficient context or explanations why these examples are being presented. The book gets lost in its own details and lurid events of persecution, while losing sight of the larger argument for long periods of time. Yes, it does eventually explain its major arguments at other points, but it definitely could have been integrated better. It is an important book if one is interested in the historical origins of persecution or medieval heresy, but the writing sometimes feels like it has lost the plot and the list of different heretics that are likely obscure to the general reader can be overwhelming and tedious.
Profile Image for me.
51 reviews3 followers
June 14, 2025
This was more sociological than I usually read and I've never studied that field but luckily it's not too jargon-heavy so I managed to get through it, though I would not recommend it if you're avoiding academic reads as it definitely is one.

Overall I liked this book, the earlier parts setting out the similarities between 11th-12th century prejudices and the groups who were persecuted as a result was interesting and seemed convincing, but then when the author places the blame on the emerging literati (aren't they, like 'the middle class', always emerging in whatever part of history you read?) in a way that seemed to make sense for anti-semitism but it's not like lepers were competition for clerical work, is it? So that seemed odd, but then the author later says they've changed their mind on how well this explains the persecution of Jews too. But this is just my reaction based on the information in the book, as a 'lay' (ie non-academic) reader who was just interested in the book by a blurb on Amazon.

I didn't read the "bibliographical excursus" at the end as that veered well into things that are beyond me, like Foucault, and I am unlikely to venture into deeper reading on topic. Overall I am glad I read this book, it was interesting and a bit different from the more narrative histories I mostly read.
Profile Image for Steve Horton.
61 reviews8 followers
August 18, 2016
I came upon this book the best way possible...a referral by 2 PhD's in their respective areas of expertise. I was listening to two different Learning Company tape series...The Medieval World by Dr. Dorsey Armstrong and The HIgh Middle Ages by Dr. Philip Daileader. During the last lecture of both, when summarizing trends in the field, both mentioned this book. It is well worth the endorsements by both professors, as its thesis is very illuminating.

Dr. Moore illustrates through a number of examples that the "presecuting society" was not created by spontaneous hatred for Jews, or lepers, or heretics by the general populace. Instead, the Church and political entities of the day orchestrated persecution for its own ends. I know this thesis is not a bolt of lightning for most layman who read a lot of medieval history, (or students of human nature) but Moore's argument is tight, cogent, and convincing. It is reasonable to think the powerful would feel compelled by religious or social obligations to protect, or at least not abuse, the powerless. Unfortunately, Moore convincingly shows us otherwise.

This book is accessible to any layman with an interest in medieval or early social history. You do not need a PhD to access its riches.

SH



Profile Image for Reading Through the Lists.
552 reviews13 followers
November 17, 2018
The first four chapters (essentially the entire first edition) are sound, if a little outdated, and make a compelling case for reading the increased persecution of Jews, lepers, and heretics in the 12th century as a sign of a new "persecuting society" controlled by a new and powerful set of rulers intent on exercising their new domination in a crucial period of change in European history.
However, the 5th chapter and the conclusion (added with the second edition) are simply a re-tread of the first 4 chapters with places where Moore acknowledges the limitations of his previous work, but in such a way as to still maintain that he was really right all along and that all subsequent scholarship is really in debt to him for his pioneering research. This blatant self-aggrandizement is terribly grating and completely unnecessary, and brought this book down from 4 to 3 stars.

Profile Image for Mir.
4,974 reviews5,331 followers
February 13, 2023
First of all, Moore's study is in part a counter to earlier historians such as Bernard Hamilton and Richard Southern, who argued respectively that the Inquisition was a substitution of rule of law for mob violence against heretics, and that regular folk were more violent toward heretics than ecclesiasts. Moore holds that 19th and 20th century Anglophone historians' view of persecution as a leading characteristic and symptom of the "barbarous" Middles Ages was influenced by their hatred of Roman Catholicism.

However, Moore says, there is a marked shift toward a more persecuting society in the 11th and 12th centuries -- why? It wasn't just a sense that religious unity is necessary for social cohesion, because there was a general increase in persecution of not only heretics but also lepers, Jews, sodomites et al. The Lateran Council (1215) required Jews to dress differently from Christians and prohibited them from holding office. Denunciation of heretics was encouraged by new laws declaring heretics' property to be forfeit and in some cases expelling them from diocese (which ironically meant they were disseminating their heretics views in new communities).

This is dense book with a lot of comparisons to situations earlier in the Middle Ages or in the Roman Empire. Too much to sum up, really. I'll end by mentioning that Moore sees a progression from the Inquisition to the witch hunts of the 16th and 17th centuries to 20th century Totalitarianism.
Profile Image for Erika Canto.
53 reviews3 followers
July 18, 2020
Un estudio completo del trato social y gubernamental que se le daba a las comunidades no católicas en la Edad Media baja entre los siglos X y XIII. Pasando por los judíos, los herejes, los leprosos, los homosexuales y las prostitutas. Diferencias en los tratados y decretos en las diversas cortes de Europa: Italia, el papado, Francia, España y en particular en Inglaterra. Inquisición, Segregación, Expulsión y Excomunión. Siempre hay que tratar de entender el comportamiento actual de la sociedad dando una visión retrospectiva al pasado.
Profile Image for Eryk Cup.
11 reviews
February 19, 2025
R.I. Moore's, The Formation of a Persecuting Society: Authority and Deviance in Western Europe 950-1250 is a deep dive into how Western Europe, specifically France, England, and parts of Germany began to view Jews, Lepers, Heretics, and other minority groups in medieval society as targets of religious and political attacks.

Moore sees the developing persecuting society of this period to be a top-down movement from political and religious leaders and not a mass movement from the people, a bottom-up movement. He also feels that the main groups being attacked were not all that dissimilar because of the methods of exclusion, intolerance, and persecution.

At times I found the book incredibly easy and then hard to read. Moore's style is not perfect for an American reader because of his British historical writing and analysis style. Overall this book is a landmark read and important for anyone studying this period and the persecution that began in this time and continued to resurface throughout European history. I would recommend it, but definitely a book you should take your time with and discuss with others.
Profile Image for Bob.
766 reviews8 followers
July 12, 2025
A very scholarly and well thought out work. Moore posits that the various campaigns against minorities: jews, heretics, lepers, homosexuals etc had less to do with the behaviour of the victims and more to do with the persecutors: principally their need to establish power, influence and control, whether as secular or religious leaders or the functionaries that supported them.
Moore was to develop one theme - that there was never any such thing as a coherent ‘Cathar’ heresy in The War on Heresy.
305 reviews
November 14, 2020
the rise of persecution - part of a change of control - literate elites in concert with ecclesiastical & secular rulers ushered in their judgments in place of popular judgment -

heretics, Jews, lepers, subjects of rulers' control vs. community judgment

prejudice from the top-down - literacy downside
Profile Image for Kate.
132 reviews
June 29, 2019
An incisive view of the function of persecution in medieval society, the groups which it affected, and the literate, clerical origins of what is commonly perceived as based in popular peasant sentiment.
Profile Image for Pseudointelektualac.
21 reviews
March 31, 2025
If you are interested in the history of medieval heresy, this guy here pretty much sums it all (especially in the revised, 2nd edition). I found it very useful for academic purposes. Can't help but admire his essayistic style.
Profile Image for Emily.
77 reviews5 followers
February 3, 2020
convincing but the way the author got to his argument was confusing and at times, unclear. the way he writes is largely inaccessible and far too wordy for my taste. run on sentences galore.
15 reviews
January 4, 2009
It was a remarkable thing that Jesus touched the lepers. How he shocked the people of his time! Who would think that the persecution of the Jews is tied to such a thing as the separation of the lepers? R.I. Moore shows how the persecuting society formed in Europe. It is less a persecuting society now, but vulnerable. He goes too far I think however. There is persecution and there is persecution. You cannot so easily equate worse things with lesser.
Profile Image for Laura.
126 reviews43 followers
March 12, 2008
This, despite being a book I had to read for a class, was legitimately a very interesting one. Some of his ideas are a bit 'out there,' but the whole idea of a society changing as fundamentally as the change he describes is a fascinating one.
Profile Image for wholelottaabs.
32 reviews
Read
October 25, 2023
Add the thesis’s at the beginning of each chapter to make it easier for readers please.

Read this for my religious persecution & tolerance class.

~no rating
Profile Image for Katie.
160 reviews5 followers
January 29, 2010
Again I say, I can find value in any book that makes its point in less than 200 pages. I like Moore's other book (First European Revolution) better.
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