"It is well known, among students of Theosophy and Occultism, that the philosophical doctrines and ethics which were given to the world through the Theosophical Society during the 16 years immediately following its foundation in 1875, emanated from certain Eastern Teachers said to belong to an Occult Brotherhood living in the trans Himalayan fastnesses of Tibet. H. P. Blavatsky who, together with Colonel Olcott founded the Theosophical Society, acknowledged these Eastern Brothers as her Teachers, stating not only that They existed, but that she herself had received training and instruction at Their hands during her sojourn in Tibet, and was therefore able to speak from her own knowledge and personal experience. It was not until 1880... that... the late A. P. Sinnett, then living in India, was enabled through the agency of Madame Blavatsky, to enter into correspondence with her own Teachers, whom she referred to variously under the terms, The Brothers, The Mahatmas, and later The Masters of the Wisdom."