Secret Doctrine, Volume 1 (Barnes & Noble Digital Library)

Originally published in 1888, The Secret Doctrine is Madame Blavatsky's two-volume magnum opus, constituting one of the seminal works on esoteric knowledge of their age. Volume 1, &quote;Cosmogenesis,&quote; covers the creation of the universe, the evolution of our universe, and how it follows the Hindu cycles of manvantaras (activity) and pralayas (passivity).