Ethics is the swan song of the great humanitarian scientist and anarchist, Peter Kropotkin. It constitutes, as it were, the crowning work and the resume of all his scientific, philosophical, and sociological views, at which he arrived in the course of his long and unusually rich life.   Starting with the moral principle in nature, to the moral conceptions of primitive peoples, Kropotkin traces the development of moral teachings from Ancient Greece, Christianity and the Middle Ages, through to the 19th century philosophers. In this way, Ethics gives answers to two fundamental problems of morality: its origin and historical development, and its goals and standards.   A realist and a revolutionist, Kropotkin regarded ethics not as an abstract science of human conduct, but as a concrete scientific discipline, whose object it was to inspire people in their practical activities. According to his theory, mutual aid, justice and self-sacrifice are the three elements of morality and these elements lie at the basis of human ethics. He held that ethics should be one and the same for all people - that no matter what class or party one might belong, we were all, first of all, human beings.   In his introduction, George Woodcock, a great humanitarian in his own right, describes the background from out of which Kropotkin was moved to write this unforgettable work. He introduces the reader, not only to the political and social climate, but also to the man and his innermost concerns.  Ethics is the 8th volume of The Collected Works of Peter Kropotkin, published by Black Rose Books.