From 1924 to 1927 Katherine Tingley spon­sored a series of private studies in The Secret Doctrine, with Dr. de Purucker as lecturer. This record of the meetings provides an excellent introduction to H. P. Blavatsky’s masterwork, yet it stands on its own as a clear restatement of the philosophy expounded by all great thinkers and sages. Beginning with the three fundamental pos­tulates of the SD, the presentation moves to cosmic and human evolution, with emphasis on the interconnectedness of all beings. Other topics include man’s nature and destiny; avataras and buddhas; initiation, the Mysteries, and ethical values.