First published in 1960, this book is intended to be a concise but complete treatise on Ethics. In the course of our lives we all face moral problems. Some of these we solve easily, some with difficulty and some not at all. It is the job of the moral philosopher to examine the general nature of these problems and to investigate their logical significance. His task however extends beyond investigating what are specifically moral problems; for he is concerned with the whole field of moral discourse - that is, with moral prescriptions and evaluations of all kinds. For this reason the branch of philosophy known as Ethics may usefully be defined as the study of the logic of moral discourse.This volume is written in clear and straightforward language and is liberally illustrated with practical examples. It should appeal, not only to teachers and students of Ethics in universities, but also to the general reader who is interested in seeing how an important branch of philosophy is presented with the aid of analytical methods.