First edition of one of the most influential spiritual books ever written, by a pioneering Indian-American, the first great popularizer of yoga in America, the founder of the Self-Realization Fellowship (SRF). A Very Good copy in original beige cloth stamped in gilt, top edge red (some darkening and wear to spine and edges; some bumping and wear to corners of boards; previous owner's ink inscription on front pastedown). xvi, 498 pages.