"John Venn died in 1923, and for the next century his academic work, and indeed his life, has had little critical attention. When fifty years ago my elder daughter was taught about Venn's diagram in her Cambridge school, I asked her if they told her who Venn was. 'Oh, was he a person?' she replied. So I took her to the local churchyard (for I knew Venn lived in our parish) and we soon found his grave, overgrown and neglected. Now at last, in this wonderful scholarly book, Verburgt ends this neglect with a dozen chronological chapters divided into the main themes of logic, probability, moral science, religious thought, and biography. Venn was one of the stalwart reformers of Victorian Cambridge as it arose from its slumbers, helping to start a Moral Sciences Tripos. For the whole of his academic life he was employed by his individual Cambridge college, Gonville and Caius, where he had read mathematics as a student and to which he was devoted. His memorial can be found there, in the dining hall: a stained-glass window depicting the diagram for three sets. This is an inspirational book for students and scholars of the history of philosophy and science."–A. W. F. Edwards, author of Cogwheels of the Mind: The Story of Venn Diagrams