Reviewed by: Positive Atheism: Bayle, Meslier, d'Holbach, Diderot by Charles Devellennes Lloyd Strickland Charles Devellennes, Positive Atheism: Bayle, Meslier, d'Holbach, Diderot (Edinburgh: Edinburgh Univ. Press, 2021). Pp. 240. $105 cloth. How best to study the development of modern atheism? In Positive Atheism, Charles Devellennes argues that while others have sought to do so from the perspective of those who accused others of atheism, there is instead "an obvious alternative that has at least equal validity and coherence: starting with the atheists" (3). Accordingly, this book offers a study of eighteenth-century atheism from the perspective of atheists themselves. Or rather, from the perspective of four thinkers who took atheism to be a positive doctrine in its own right, with important social, ethical, and political implications. These implications are the beating heart of this book. Positive Atheism consists of an introduction followed by five chapters. Each of the first four chapters is devoted to one of the four thinkers named in the book's subtitle—Pierre Bayle, Jean Meslier, Baron d'Holbach, and Denis Diderot—while the final chapter concerns the state of atheism in France in 1789. Chapter 1 begins with Bayle's oft-made argument that since moral action stems from the passions rather than principles, it is possible for there to be virtuous atheists. That belief, coupled with his assertion that people should be free to follow their consciences, even if their consciences are wrong, culminates in a doctrine of toleration towards all, including atheists, even under the most extreme of provocations. Chapter 2 examines the atheist system of Meslier, and the "form of radical politics" (63) built thereon, specifically, his call to overthrow the tyranny and domination of both the church and the political rulers in favor of a more egalitarian society. Chapter 3 carefully maps out both the "virtue utilitarian" (117) ethical theory that d'Holbach derives from his materialist ontology and his attendant vision of political and legal structures capable of attaining the goal of material well-being for all. Chapter 4 begins with Diderot's religious journey from deism to skepticism about both theism and atheism, before turning to his political thought, in particular his social contract theory, his push for reforms to promote greater equality, and his desire to subject church to state. [End Page 413] The book is perhaps best characterized as an apology for the aforementioned four apologists of atheism, with Devellennes keen to present in as charitable light as possible the different visions of society painted by these apologists (though he does also point out some obvious weaknesses along the way, such as d'Holbach's under-motivated belief in natural justice, where virtue and vice are naturally rewarded and punished). As such, it is a successful work, as clear and rich in detail as it is erudite. In terms of reservations, I shall mention two. First, the title of the book, Positive Atheism, is apt to lead a potential reader to think that its focus will be squarely on the active denial of God, which is how the term "positive atheism" is normally understood, as Devellennes himself notes early on (7). However, as should be clear enough from the brief account of the first four chapters given above, the focus of the book is more on the social, ethical, and political implications of atheism than the actual rejection of God per se. The apparent discrepancy between book title and book content is removed halfway through the introduction, where Devellennes explains that he is recasting "positive atheism" as not merely a denial of God "but as a potentially independent mode of thought, seeking self-mastery and autonomy" (12). So construed, it becomes clear why so much space in the book is devoted to the social, ethical, and political thought of the four protagonists named in the title. But of course, one needs to have already started reading the book to know that Devellennes is operating with this novel understanding of "positive atheism." Those who base their expectations of a book's content on its title might well expect a greater focus on the four protagonists' actual denial of God than is to be found here. Devellennes' novel understanding...