"A large number of men have attained the Adept level—men not of one nation, but of all the leading nations of the world—rare souls who with indomitable courage have... captured her innermost secrets, and so have truly earned the right to be called Adepts. Among Them there are many degrees and many lines of activity; but always some of Them remain within touch of our earth as members of this Hierarchy which has in charge the administration of the affairs of our world and of the spiritual evolution of our humanity... A few of these great Adepts, who are thus working for the good of the world, are willing to take as apprentices those who have resolved to devote themselves utterly to the service of mankind; such Adepts are called Masters. One of these apprentices was Helena Petrovna Blavatsky—a great soul who was sent out to offer knowledge to the world. With Colonel Henry Steel Olcott she founded The Theosophical Society for the spread of this knowledge which she had to give. Among those who came into contact with her... Mr. A.P. Sinnett... his keen intellect at once grasped the magnitude and the importance of the teaching... Although Madame Blavatsky herself had previously written Isis Unveiled, it had attracted but little attention, and it was Mr. Sinnett who first made the teaching really available for western readers in his two books, The Occult World and Esoteric Buddhism."