The Forbidden Book of Knowledge is a modern interpretation of Tantra, Alchemy and the I Ching. It is called the forbidden book of knowledge because the forbidder of this knowledge is only one's self. Basically the book is a book of sorcery. - Charles F. Thompson

Thompson's work is an enlightening inspiration that illuminates the mystery of creation in general and human existence in particular. It is definitely one of the best contributions in the fields of magic, alchemy, mysticism and sexual magic. - Günther Gold