This volume contains C. D. Broad's Cambridge lectures on Ethics. Broad gave a course of lectures on the subject, intended primarily for Part I of the Moral Sciences Tripos, every academic year from 1933 - 34 up to and in- cluding 1952 - 53 (except that he did not lecture on Ethics in 1935 - 36). The course however was frequently revised, and the present version is es- sentially that which he gave in 1952 - 53. Broad always wrote out his lectures fully...