Originating in India, M 3 h 0 ayana Buddhism spread to Central Asia, Tibet, Mongolia, China, Japan and other countries of East Asia. In Tibet and East Asia, M 3 h 0 yana eventually became the prevalent form of Buddhism. Western interest in M 3 h 0 yana has increased considerably over the last twenty-five years, reflected both in the quantity of scholarly material produced and also in the attraction of Westerners towards Tibetan Buddhism and r augThis book aims to provide in one volume an up-to-date and accurate account of the principles of M 3 h 0 yana Buddhism as they are found in both the Indo-Tibetan and East Asian forms of M 3 h 0 yana. It seeks to introduce and reflect some of the recent scholarly work in the field, and in particular the book is concerned to convey the diversity and richness of M 3 h 0 yana Buddhism, a diversity which prevents any attempt at simple definition.