La référence incontournable de celui qui est considéré comme ayant avoir ouvert librement les portes de la connaissance magique au 20 siècle .Ce livre en 10 étapes décrit pas à pas les étapes et les exercices spirituels nécessaires au développement magique.Il fait partie d'une série de trois volumes(magie évocatoire et kabbale sont les suivants ),qui sont chacun des étapes et des révélations dans la connaissance occulte.
Franz Bardon (1909–1958) was a Czech stage magician and teacher of Hermetics. He is best known for his three volumes on Hermetic magic: Initiation Into Hermetics, The Practice of Magical Evocation, and The Key to the True Quabbalah.
An additional fourth work attributed to him by the title of Frabato the Magician, supposed by many of his students to be a disguised autobiography. Though the book lists its author as Bardon, it was actually written by his secretary, Otti Votavova. While some elements of the story are based on Bardon's real life experience, most of the book was written as an occult novel with much embellishment on the part of Votavova.
Bardon's works are most notable for their simplicity, their relatively small theoretical sections, and heavy emphasis on practice with many exercises. Students of his, such as William Mistele and Rawn Clark consider him to have written the best training programs of any magician of the 20th century. They were written with the intention of allowing students who wished to practice magic the means to do so if they could not study under a teacher.