This book, exactly as the title suggests, is a thorough debunking of the sophistry of the charlatan Eugen Dühring - and to this our friend Fritz did not certainly disappoint. Thing is, nobody cares about Herrn Dühring anymore. So why did I read this? Prolly the same reason why you came for this review: this book is widely acclaimed as one of the most succinct and comprehensive summary of the whole of Karl & Fritz's works, from philosophy to political economy to socialism. This claim though, I'd dispute.
About, say, 60-65% of the work is more or less devoted to following Herrn Dühring into his from the ground up original foundations of critical philosophy and the conclusions derived therefrom; and in doing this it is reviewed that the entirety of Duehringian thought is either sheer ignorance and fallacy or plagiarism. To be honest, this is a slog. To be sure, it makes good laughing stock, but probably not that worth it to spend one's time on.
Certainly, the remaining 35-40% can be constructive for understanding Marxism more comprehensively - or at least for resolving disputes, misconceptions and misunderstandings concerning Marxism (just like Christians doing endless exegesis on the Holy Scripture it seems). But to what extent?
The first section deals with philosophy. One can roughly divide this into ~3 parts: the philosophy of nature (but really most of it is just natural sciences), moral or human philosophy (truth, equality, freedom etc.) and finally dialectic. The first part can just be skipped in its entirety without punity; the second part may be of some interest for people reading this as socialists, but for someone like me who studies philosophy a bit more thoroughly, it's neat but not that interesting. And the third part, I think it's the only place I've come across where Karl or Fritz talks about the dialectic comprehensively as their subject-matter (rather than just using its methods or concepts in their inquiries). However, the dialectic an enormously complex matter, much more nuanced and convoluted than just "thesis-antithesis-synthesis" (which isn't even dialectic, and well to be sure isn't brought up in this work), or contradictions, or the negation of the negation (resolution of contradictions). The latter two are certainly important elements of the dialectic, but it's quite easy to come off with a very lacklustre understanding.
Now, one can study the dialectic either as an exclusively philosophical matter, in which case Hegel is unavoidable - and I'd even assert that for the Marxian materialist dialectic it would be more constructive and interesting to study the works of later Marxists, like Adorno, Lukacs or Zizek than to study Karl and Fritz themselves. But for historical materialism, i.e. the dialectic applied to the studies of history, political economy and sociology, Karl & Fritz's works are indispensible. 'Anti-Duehring' certainly has a section devoted to this: section 2 dealing with Political Economy, especially the chapters titled 'Theory of Force' which dispute Herr Duehring's claim that force, i.e. political might, is the major driving force of history and society; and in doing so Fritz demonstrates the renowned 'materialist conception of history'.
But I'd say that one is better served reading this alongside something like the first chapter of Karl's 'German Ideology', being more comprehensive and succinct, and not having to deal with the tomfoolery of Herrn Duehring; as well as other works on the anthropology of labour, trade, money, property, the State, debt etc. like Kropotkin, Graeber or Clastres (I think Fritz himself has a work on this, 'The Origins of the Family, Private Property and the State', and although I haven't read the work I haven't heard good things about it). Because, although these chapters certainly have very interesting things, Fritz leaves more questions than he answers them.
Then we get to the more economic chapters on value, capital, surplus-value, rent, and finally on the history of classical political economy (Smith, Ricardo, Petty, Locke, Hume, Quesnay, etc.). Special interest on the chapters on value, simple/compound labour, capital & surplus-value, which are essentially cornerstones of Marxian political economy - the rest can be skipped. I want to dwell on this part a bit, for it's the part that most concerns and bothers me.
Marx's political economy (or just Marxian economics) is founded on the labour theory of value (LTV), which posits that the Value of a product is determined by the social necessary labour time required for its production. Alongside this, the product has 2 other sorts of value: use-value and exchange-value. This seems simple if you were to read this as a socialist learning more about revolutionary thoughts; but from an economic standpoint this is quite a controversial matter: the LTV has in general fallen out of favour in economics, and not just among mainstream neoclassical economists but also among some Marxian economists too. I don't know the exact details of this dispute so I can't comment, but in any case, getting a mere preliminary survey of the LTV from this book again raises more questions than it answers.
Then we have the theory of surplus-value (TSV), which relying on the LTV, is no less problematic. Now, the TSV is not just as simple as 'I produce $4 per hour, yet only receive $2 as compensation, this is clearly theft!' or to put it in another way, 'I have produced as much value as my wage is worth in 6 hours, yet I have to work for another 6 hours just to produce the capitalist's profit, this is clearly exploitation!'. It's much more nuanced than that, and much more problematic. It has to do with the concept 'labour-power', which as opposed to mere 'labour' is a commodity, and a special one at that, being the only commodity that creates value. It is this commodity that the worker sells to the capitalist for a wage. This wage is mere capital, more specifically it seems 'variable capital', for production. However, being a value-creating commodity, THE only one at that, labour-power creates the surplus-value which other sorts of capital (constant capital, like raw materials and facilities) cannot create. This surplus-value is then, as is well known, appropriated by the capitalist as profit (in other cases interest and rent) as well as further capital. This is, as even Karl and Fritz themselves asserted, not theft or injustice to the seller as far the laws of exchange of commodities are concerned: this extraction of surplus-value is indispensible from the course of the development of society as soon as labour is commodified, is attached a price tag and sold and bought at the labour market, as 'labour-power'. As long as the logic of exchange and money prevails, this extraction of surplus-value is inescapable, thereby sweeping away all the reformist pseudo-socialist struggle aiming, as its ultimate ends, at higher and equal pay.
But of course this has problems too - rooted in the LTV as it is. Why is labour the only commodity that creates more value? Why does something only have value when there is labour involved in it? Can't other forms of capital, i.e. constant capital, not in itself create more value, even if marginally less than labour? And how does this value, determined by socially necessary labour time, relate to market prices? I won't dispute it myself, seeing how ignorant I am of this matter. But I'd still approach this with keener awareness of its possible limitations (seeing how much these theories have come under fire) than a lot of socialists I've engaged with would, arrogantly and self-confidantly, despite not having done much reading themselves.
These chapters are good overviews of the matter of value and surplus-value as seen by Marxists, but they certainly are not to be contented with. However, as their major focus is still on attacking Duehring, I believe there are other resources available from which one can get a much more comprehensive and satisfactory survey of the ideas in this book, including other works from Karl and Fritz themselves. And, well eventually you'd have to tackle the bigger works, most importantly Capital - that's a given; but for a general introduction, this is not a really good place to start as many people claim. I'd recommend, for example, the youtube channel 'The Marxist Project', which explores pretty much all of the more important subjects of this book, also on an introductory level, but devoid of all the Duehringian mess and much more easily comprehensible.
I haven't read the last section on socialism, for a few reasons. For one, I have already read 'Socialism, from Utopian to Scientific' by Fritz (which apparently is an abridgement or extract from this very section), as well as have looked around at other resources on the matter of scientific socialism expounded by Karl and Fritz - so I'd say I already have a pretty good understanding of the matter, enough to skip this part.
But another reason is that, from experience I can say that, never trust Marx and Engels themselves when they talk about socialism or communism itself, as paradoxical as that may sound. It very easily lends into the vision of Marxist-Leninists of state managed central planning, labour vouchers and stagism, which is a clear disaster, absolute disaster. Just go read Kropotkin if you want to know what socialism looks like.
As for of the transition to socialism, that's an even more complex and convoluted matter - and the Marxian account is hundredfold problematic than its economic theories. Marxists have traditionally had faith in the proletariat, which will wake up from its dogmatic slumber of false consciousness as its conditions get worse and worse, take up arms to engage in a bloody revolution, triumph over the bourgeoisie in order to establish the dictatorship of the proletariat, and when it finally defeats the bourgeoisie once and for all, it erases itself as the proletariat, the dictatorship of the proletariat withers away, and stateless, classless, moneyless society finally emerges.
A very teleological account, almost blueprint-like. This doctrine is almost religiously revered by Marxist-Leninists, who use this teleology, one that can almost compare to the second coming of Christ, to justify whatever astrocities they might commit. All in the name of constructing communism, no censorship, political repression, forced labour or forced disappearances will be enough. The enlightened vanguard party of the proletariat will guide the people to their victory; such is their faith. I don't buy their model of communism. This is where Marx and Engels are at their weakest, the most idealistic part in their other wise materialist philosophy. The proletariat has not risen up to take up arms - is it not just as simple as ideology (this I take cue from the post-structuralists and psychoanalysts who factor in desire, and from Bourdieu with his concept of habitus), and even then Marx and Engels have greatly underestimated the tremendous force of ideology. Central planning as Marx incessantly insisted on, has proved itself to be the direct opposite of what it claims to be, not socialism but a disgusting state bureaucracy, a command economy. Party politics and vanguardism remain nothing but orthodoxy and authoritarianism. And do not even bring up Engels' 'On Authority', a clear disaster of an attempt to refute anarchism. This is why I tell you not to bother with Marx and Engels themselves when it comes to socialism. Their philosophy and political economy are brilliant, so is their method of analysing current society. But their theories come crashing down when it comes to socialism.
It took a month for me to finish this, while I could've breezed through it in a week. F*ck school, f*ck exams.