The magic of the lOT is an intensely practical, personal, experimental art. Two major themes run through this book: that altered states of consciousness are the key to unlocking one's magical abilities; and that these abilities can be developed without any symbohc system except reality itself. The magical style of thinking is explored with chapters on alternative belief and the alphabet of desire. A natural inclination toward the darker side of magic is as good a point as any from which to begin the ultimate quest, and half this book is devoted to the black arts. Independently of ancient dusty books and mystification the vital elements of many traditions conspire here to create a living art. The Illuminates of Thanateros are the magical heirs to the Zos Kia Cultus and the A .'. A .'. This book, written originally as a sourcebook for the lOT, is now being released for those who wish to work alone and for those seeking admission to the Order. Although the initiate is referred to as "he" throughout, the reader should understand that this is merely in keeping with the traditional style of magical texts of this type, and that this course of study by no means excludes women.