Eight Lectures on Yoga by Aleister Crowley (audiobook)

Aleister Crowley's masterwork on the principles and purpose of Raja Yoga, culled from a lifetime of study in esoteric philosophy and bringing together such diverse subjects as magic, taoism, Einsteinian physics, and modern philosophy. In eight essays, both informative and hilarious, Crowley lays out the principles of yoga, the mysteries of thought, and the power of the mind to act on itself.