Abstract

In lieu of an abstract, here is a brief excerpt of the content:Reviewed by:John Venn. A Life in Logic by Lukas M. VerburgtClaudia CristalliLukas M. VerburgtJohn Venn. A Life in Logic Chicago and London: The University of Chicago Press, 2022. 411 pp., incl. indexThis is the first intellectual biography of John Venn (1834–1923), British logician, “philosopher and antiquarian” (DNB). Until now, Venn had not been studied as a philosophical figure in its own right. He is mostly remembered today for the “Venn Diagrams,” a graphical device illustrating logical relations such as inclusion, exclusion, conjunction, disjunction, and for having systematically articulated a frequentist theory of probability. Together with an in-depth account of Venn’s logical developments, of his studies in probability theory, and of its applications to history and to anthropometry, Lukas M. Verburgt brings to life Venn’s spiritual struggles within—and eventually out of— his family’s religion, evangelicalism. Verburgt’s reconstruction is substantiated by many extracts from Venn’s correspondence and private notes, which add substantially to the value of this biography. (Of note is Verburgt’s 2022 editon of Venn’s unpublished writings and slected correspondence, which can be considered a companion to this biography).While showing the connections of epistemology, religion and academic politics in Victorian Cambridge, Verburgt contributes an important chapter in the history of logic and of empiricist philosophy.The book opens with a chapter on Venn’s childhood and early youth (1834–53), largely drawn from manuscript material of the Venn family—the “Parentalia”—and from Venn’s Annals of a Clerical Family, where he included “autobiographical recollections” (p. 2). The chapter introduces the reader to the values of a prominent evangelical family and to their peculiar way of understanding Christianity as a faith to be embedded in habit and to be taught by example. The following two [End Page 385] chapters follow Venn’s development, first as a student at Caius college, Cambridge (1853–57) and then as a country curate; the chapters elaborate on the institutional history of the college and on parish life from the perspective of evangelical orthodoxy. Chapter 4 is still chronologically situated within Venn’s early clerical service but is arranged thematically around his first publication (1862), “Science of History,” which contains some elements of the fundamental ideas elaborated in the Logic of Chance (1866): namely, that probability theory could only make predictions about long-run frequencies of events, and never about individual cases (p. 77). The core of Venn’s argument in 1862 revolved around possible atheistic implications of a science of history. If at some point it would be possible to predict future events, would there still be free will? Or a God? In his reply, Venn maintained that any prediction concerning individual agents could be defeated by assuming that the agent gets to know the prediction and changes her actions accordingly (pp. 74–76).After the publication of the “Science of History” essay, Venn left the parish for Cambridge, where he worked first as a Catechist (1862– 1867) and then as a moral sciences lecturer. Verburgt devotes chapter 5 to that and to the Cambridge milieu, where Venn sides for university reforms and engages with the Grote Club, all while drifting away from evangelical orthodoxy. After laying out Venn’s theory of probability (Chapter 6), Verburgt returns to an integrated analysis of Venn’s scientific and religious thought in chapter 7. This chapter may be particularly relevant for pragmatist readers, since here Verburgt highlights the commonalities between Venn’s “religious logic” and the notion of belief that will be expressed in more detail by pragmatism. Verburgt focuses on Venn’s logic in three subsequent chapters (Chapters 8, 9 and 11). Considered together, they provide a comprehensive history of Venn’s logical development, which Verburgt proudly announces as the first of this kind (p. xx). The last chapter on Venn’s logic (Chapter 11) also includes Verburgt’s argument for “includ[ing] Venn in the local history of early analytic philosophy at Cambridge” (p. 262). Chapters 10 and 12 recount Venn’s last years with particular emphasis on his interests in natural and historical sciences; they provide relevant material for scholars interested in the history and philosophy of...