The Secret Doctrine II: Anthropogenesis
by H.P. Blavatsky
1888

The birth and evolution of the Sacred Science of the Past are lost in the very night of Time...It is only by bringing before the reader an abundance of proofs all tending to show that in every age, under every condition of civiization and knowledge, the educated classes of every nation made themselves the more or less faithful echoes of one identical system and its fundamental  traditions-that he can see that so many streams of the same water must have had a common source from which they started. - II