Peter Singer’s remarkably clear and comprehensive Practical Ethics has become a classic introduction to applied ethics since its publication in 1979 and has been translated into many languages. For this second edition the author has revised all the existing chapters, added two new ones, and updated the bibliography. He has also added an appendix describing some of the deep misunderstanding of, and consequent violent reaction to, the book in Germany, Austria, and Switzerland where the book has tested the limits of freedom of speech. The focus of the book is the application of ethics to difficult and controversial social questions: equality and discrimination by race, sex, ability, or species; abortion, euthanasia, and embryo experimentation; the moral status of animals; political violence and civil disobedience; overseas aid and the obligation to assist others; responsibility for the environment; the treatment of refugees. Singer explains and assesses relevant arguments in a perspicuous, non-doctrinaire way. He structures the book to show how contemporary controversies often have deep philosophical roots; and he presents an ethical theory of his own that can be applied consistently and convincingly to all the practical cases. The book’s primary readership remains teachers and students of ethics whether in philosophy or some other branch of the humanities or social sciences. However, such is the clarity of the book’s style and structure that it should interest any thinking person concerned with the most difficult social problems facing us as we approach the twenty-first century.