A new book by esotericist, psychologist, and educator Oleg Telemsky talks about the worldview and practical activities of the intellectual club Castalia, which he founded nine years ago. Particular attention is paid to the origins of the Castalian tradition – occultism (especially Thelema), Jungian depth psychology, modern symbolic art and literature. The main part of the book is written in the form of a dialogue with Andrei Kostenko, a researcher of occult teachings and editor of two previous works by Oleg Telemsky. More precisely, Andrey asks questions, and Oleg answers them very thoroughly. The book includes several important keynote lectures and Internet publications by the Author.