To Helena Blavatsky the earlier civilizations such as the Egyptians and Greeks understood esoteric wisdom better than modern societies which made their teachings more proficient in the occult arts.
The teachers of this wisdom were the “Mahatmas” or Masters of Wisdom as they were known in India, lived on through centuries in various incarnations taught their profound knowledge to worthy students. According to her, most of the Mahatmas lived in remote regions of Tibet, Mongolia, or India, forming the Brotherhood of Adepts. Such a concept of brotherhoods exists in numerous occult traditions.
Helena claimed that two of the mahatmas (Koot Hoomi Lal Singh and Morya) were the real founders of the Theosophical Society. The Mahatmas frequently sent mysterious notes to officers of the Society and the disciples. Also, they dictated the various material which she later wrote into her books. A.G.H.