Blavatsky's world esoteric bestseller reveals to the reader the secrets of the origin of all world religions. It sets out the foundations of ancient religious and philosophical teachings and shows the history of secret societies and orders that arose on their basis. In this book you will find the truth, not yet recognized by official science, but confirmed by dozens of historical facts and written sources. Ancient Egyptian initiates and Indian yogis, mystics and neophytes, Pythagoreans and Kabbalists, Nazarenes and Essays, Sufis and shamans, Rosicrucians and Freemasons - what unites them? Magic and witchcraft - do they really exist? Blavatsky answers these and many other questions in a scientifically convincing manner, citing historical facts and ancient religious and philosophical sources as examples.