Eight Lectures on Yoga is a book by English occultist and teacher Aleister Crowley about the practice of Yoga. The book is number 4 of volume 3 of The Equinox, which was published by the Ordo Templi Orientis. The work is largely a demystified look at yoga, using little to no jargon or satirical humor. It is divided under two sections into eight parts, which are transcripts of eight one-hour lectures on the subject given by Crowley. The book was originally published in 1939. Source: Wikipedia (en)