"For, strange as the statement will appear at first sight, modern metaphysics, and to a large extent modern physical science, have been groping for centuries blindly after knowledge which occult philosophy has enjoyed in full measure all the while. Owing to a train of fortunate circumstances, I have come to know that this is the case; I have come into some contact with persons who are heirs of a greater knowledge concerning the mysteries of Nature and humanity than modern culture has yet evolved; and my present wish is to sketch the outlines of this knowledge, to record with exactitude the experimental proofs I have obtained that occult science invest its adepts with a control of natural forces superior to that enjoyed by physicists of the ordinary type, and the grounds there are for bestowing the most respectful consideration on the theories entertained by occult science concerning the constitution and destinies of the human soul. (Introduction)"