 Charlie Dunbar Broad (1887–1971) was an English philosopher who for the most part of his life was associated with Trinity College, Cambridge. Broad’s early interests were in science and mathematics. Despite being successful in these he came to believe that he would never be a first-rate scientist, and turned to philosophy. Broad’s interests were exceptionally wide-ranging. He devoted his philosophical acuity to the mind-body problem, the nature of perception, memory, introspection, and the unconscious, to the nature of space, time and causation. He also wrote extensively on the philosophy of probability and induction, ethics, the history of philosophy and the philosophy of religion. The ample scope and scale of Broad’s work is impressive. In addition he nourished an interest in parapsychology—a subject he approached with the disinterested curiosity and scrupulous care that is characteristic of his philosophical work.