Book excerpt: In this unjustly neglected and misunderstood work Sextus sets out a distinctive Sceptic position in ethics. He discusses the concepts good and bad, and puts forward the sceptical argument that nothing is either good or bad by nature or intrinsically or invariably, but only relatively to persons and/or to circumstances. He then argues that the sceptic is better off than the non-sceptic. In the latter part of the book, Sextus attacks the Stoic view that there is such a thing as a 'skill for life'.