Dame Mary Douglas (1921-2007), was one of the most distinguished British social anthropologists known for her works on human culture, symbolism and risk.

"Professor Douglas writes gracefully, lucidly and polemically. She continually makes points which illuminate matters in the philosophy of religion and the philosophy of science and help to show the rest of us just why and how anthropology has become a fundamentally intellectual discipline." - New Society "Professor Douglas' book sparkles with intellectual life and is characterised by a concern to understand. Right or wrong, sound or idiosyncratic, it presents a rare and exciting spectacle of a mind at work." - Times Literary Supplement

• Introduction; Chapter 1 Ritual Uncleanness; Chapter 2 Secular Defilement; Chapter 3 The Abominations of Leviticus; Chapter 4 Magic and Miracle; Chapter 5 Primitive Worlds; Chapter 6 Powers and Dangers; Chapter 7 External Boundaries; Chapter 8 Internal Lines; Chapter 9 The System at War with Itself; Chapter 10 The System Shattered and Renewed;