Author; Mark Stavish 

While the egregore is a concept with which most esoteric students are at least somewhat familiar, it is unlikely you would find a commonality of definitions among them. It is very appropriate for this vaguely understood concept to be the subject of a more in-depth study, and I can think of no better person to do this than Mark Stavish, whose background brings both authority and depth to such a review. The book provides a historical understanding of the origin of the term and its use through the ages, the various types that may exist in passive and active form, and an explanation of them through profound personal experience. This alone makes the book valuable. However, chapter 7 should be required reading for anyone contemplating joining an esoteric order--or any group with a common objective, for that matter. Stavish writes in a comfortable and informative style, and one comes to the end of the book with new information and much to think about. An excellent primer on egregores.” (Piers A. Vaughan, author of Renaissance Man & Mason)