The Most Important Thing in the World

78 pp. Illustrated with 11 plates. A collection of short essays on various topics, written from the perspective of esoteric Christianity. Topics include astral healing, alchemy, the spirit realm, astrology, subliminal and supraliminal consciousness, and an early discussion of birth control (Sanger opened the first birth control clinic, which would later become Planned Parenthood, in 1916; she opened the American Birth Control League in 1921). A copy of Leech's 'The Great Crystal Fraud, or, The Great P.J.' advertises the chapters of this book as available in separate volumes, bound in cloth. All the chapters from this volume are listed except the one on birth control, which suggests either that this was added for the one-volume release, or subtracted for the series release.