This book is "The Classic Manual of Buddhist Doctrine and Meditation". Written by Buddhaghosa in the Fifth Century in Sri Lanka, and known by its Pali title, Visuddhimagga, it is the fundamental manual for the Theravadin school of Buddhism, upon which the popular Vipassana meditation is based. But it is ever so much more than merely a Vipassana manual. Divided into three main sections covering the three "baskets" of Buddha's teaching, it first addresses Virtue (Sila) and a brief chapter on acceptable ascetic practices. Next there follows a large and wonderful section on training in Concentration (Samadhi) based on the forty traditional meditation subjects. Finally, it concludes with a large section on Understanding (Panna), the wisdom teachings of the Abhidhamma.