Rudolf Steiner 
An Esoteric Cosmology [EPUB ebook] 

It is only of recent times that the truths of occultism have been the subject of public lectures. Formerly, these truths were only revealed in secret societies, to those who had passed through certain degrees of initiation and had sworn to obey the laws of the Order through the whole of their life. Today, man is entering upon a very critical period. Occult truths are beginning to be disclosed to the public. In a matter of twenty years or so, a certain number of them will already be common knowledge. Why is this? The reason is that humanity is entering upon a new phase which it is the object of this lecture to explain.