'"Hammer has done a great service with his careful analysis of an understudied phenomenon in contemporary religion: the New Age. This book is a treasure of research into the roots and development of modern esotericism offers new insight strong book, which certainly deserves a place in the stacks of academic libraries."' T.A. Forsthoefel, "Choice", 2001. " this erudite work [ ] should be on any reading list for graduate seminars dealing with the New Age." Frank J. Korom, "Religious Studies Review", 2002.