This is one of the worst books I have read in a long time. Under a thin patina of sophistication and scholarship lies a pernicious ignorance or dishonesty and a lot of poor logic. That sounds harsh, but permit me to lay it all out.
The argument of the book is an exercise in question begging. The argument could be summarized as, “The best parts of Protestantism can be found in Roman Catholicism and are therefore merely vestiges of Catholic theology; the bad parts of Protestantism are due to an uncritical acceptance of late-medieval nominalism.” If you already agree that the Roman church is the one, true church, this makes sense, but if you do not accept that premise, this book will not convince you of anything. Lest you think I exaggerate, let me quote the book (p. 258): “Although French Protestants like to call their services le culte, the fact is that there is nothing that resembles so little the worship of God or is more like the cultivation of a religious humanism than the general practices of Protestantism, unless they happen to be simply a survival of Catholic worship itself.” So, Protestant worship is worship only insofar as it copies Roman practice. Likewise, we are told that the revival of English Protestantism by Wesley, with his emphasis on sanctification, occurred because of his debt to pre-Reformation Catholic mysticism. The book abounds with such claims.
Let’s consider that claim of nominalism. In a passage I have seen quoted multiple times online, Bouyer claims that the key to understanding Luther and the Reformation is revealed by Luther saying that Occam was the only good Scholastic. I have read multiple books and essays (by Heiko Obermann, Alister McGrath and others) on the connection between nominalism and Luther and I have never come across a quote that matches Bouyer’s claim and Bouyer provides no citation. I suspect the quote is bogus. In any event, it is contradicted by other quotes from Luther (here is a real quote with a citation: “Bonaventura inter scholasticos doctores optimus est” WATi.330). As everyone knows, Luther was trained in nominalism at Erfurt, but he abandoned it and heavily criticized Occam and Biel. If Bouyer’s quote from Luther is real, it probably comes from his early years and does not reflect his mature thinking. In this same section of Bouyer’s book we have some other, serious falsehoods. We are told that the Reformers uncritically accepted nominalist ideas. It might come as a surprise to anyone reading only Bouyer’s book to then learn that Luther’s “Disputation against Scholastic Philosophy” is almost entirely directed against the nominalists Occam and Biel, other Reformers like Melanchthon routinely criticized Biel and Protestant theologians in the generations after Luther adopted metaphysical views at odds with nominalism. It might also come as a surprise to learn that nominalist theologians participated in the Council of Trent. You won’t read any of that in Bouyer’s book.
For Bouyer, the key feature of Luther’s understanding of justification is its extrinsic nature, that God declares us righteous, but leaves us just as sinful as we were before. God, according to his absolute, inscrutable power can decide to consider us righteous regardless of any real righteousness in us. This view, according to Bouyer, could only have developed within the nominalist system. For a thoughtful, scholarly refutation of this precise point, I recommend the essay by Bengt Hagglund (Concordia Theological Monthly, vol. 28, no. 6, p. 441, 1957; available online). In brief, for Luther and Lutherans the righteousness by which we are justified is real, but it is Christ’s and we receive it through faith. It is not a legal fiction with no basis. And, it is clearly taught in the Lutheran confessions (cf. Art XX of the Augsburg Confession) that when we are justified we become a new creation and begin to love God and follow his commands. We are not justified because of this change, but there is a real, ontological change in justification. Bouyer must know this, so his caricature of Protestant belief appears dishonest.
Bouyer also makes a blatant, easily disproved claim about the Protestant view of faith and nominalism. According to Bouyer, in the nominalist view faith is its own justification, i.e., a kind of “fideism”, and Protestants just followed along. From the time of the Reformation onward, Protestants have consistently held that faith justifies because it holds onto Christ’s righteousness, that the object of saving faith is Christ. Fideism is rejected. Bouyer must know this, too, and yet he repeats this claim multiple times, writing that Protestants teach a “completely subjectivist view of faith.”
Other problems abound. It is Bouyer’s explicit method to not rely on the actual words of Protestant theologians: “No religion, or religious movement, is to be judged on the basis of its theoretical expositions.” Instead, it must be judged by the reality of the religious community as it practices its belief. Although reasonable, Bouyer then uses this principle to permit himself to cherry pick those aspects of Protestant practice he considers to be the logical developments of Protestant belief. Of course, all the good things in Protestantism are merely vestiges of Catholicism, so it is all the bad parts that are the result of fundamental Protestant doctrines.
The book also contains statements that are simply, historically false. For example, we are told that Luther developed his view of sola Scriptura in reaction to the Anabaptists, not in response to his Roman interlocutors. This is a bizarre view, easily disproved.
Another complaint: when it suits his polemical purpose, Bouyer lumps Protestants together, but uses a single theologian (usually Barth) or tradition as representative. So, we are told that Protestant churches have eliminated altars. This is obviously not true of Lutherans and Anglicans.
The book is also poorly written. That may be due to the translation from the original French. Many of Bouyer’s sentences contain four or more clauses, making it difficult to follow his train of thought.
Is there anything good in this book? Unintentionally Bouyer provides some guidelines for Protestant renewal. He praises certain aspects of Protestant revivals or attempts by Protestants to return to their origins, although all the good parts, again, owe a debt to Catholic theologians. For a Protestant, connections to pre-Reformation theologians within Protestant churches are completely understandable, given that the Reformers self-consciously understood themselves to be returning the Church to an earlier, purer version, keeping the good parts and rejecting the dross of Medieval theology. With that in mind and an understanding that Bouyer’s claims about Protestantism and nominalism are nonsense, the path for Protestants is clear: return to Protestant orthodoxy while (still) rejecting nominalism, pursue a piety that takes sanctification seriously, redevelop an appreciation of the Sacraments and boldly read and study theologians from other traditions accepting the good and rejecting the bad by judging it against Scripture. This can all be done without a hint of contradiction or reliance on Catholic theology. As it turns out, this has been the direction of my own personal spiritual life for the past 15 years, long before I ever heard of Bouyer. Bouyer even suggests some earlier Protestant theologians to follow, such as Wesley, JK Wilhelm Loehe, and Johann Gerhardt. Bouyer’s explicit view is that Protestants should submit to the Pope, but his lack of any real arguments in favor of Catholic distinctives and his various errors about Protestants merely provide encouragement for a more robust Protestant renewal.