This is a very interesting book. It is very sceptical about the role of philosophy in ethics, but still shows confidence about the possibility of thinking about important things in ethics. The style is very different from the typical philosophical book; Williams focuses on the topics he finds important, rather than giving an elaborate discussion of every aspect in the history of Morality. Thereby we are given insight into how the subject should be discussed according to Williams. His main target are universalistic moral philosophers who try to give an ultimate foundation for ethics - for instance Immanuel Kant, R.M. Hare, John Rawls and Aristoteles. The aim of philosophy shouldn't be to establish moral principles, but to find good reasons and thereby confidence for living a good and flourishing life. The most important question throughout the book is Socrates': How should one live. The result is a fascinating, mostly critical, book about moral philosophy. Since its publication in 1985 it has had immense influence on the philosophy of ethics.