This is the 20th anniversary edition of Continuum's best-selling spiritual classic, which has sold over half a million in the English language and has appeared in 10 foreign-language editions (Croatian, French, German, Hungarian, Indonesia, Italian, Korean, Polish, and Portuguese). The new edition consists of a substantial new preface, an expanded glossary, some changes in terminology, and a reordering of several chapters.

This is the 20th anniversary edition of Continuum's best-selling spiritual classic, which has sold over half a million in the English language and has appeared in 10 foreign-language editions (Croatian, French, German, Hungarian, Indonesia, Italian, Korean, Polish, and Portuguese). The new edition consists of a substantial new preface, an expanded glossary, some changes in terminology, and a reordering of several chapters.