Contents: Part One -- Samadhi (Superconscious States and How to Experience Them); Kriya Yoga (Intensive Spiritual Practice); Siddhis (Exceptional Powers of Perception and Extraordinary Abilities); Liberation of Consciousness (The Culmination of Right Practice). Part Two -- The Shandilya Upanishad (A rare kriya yoga text); The Inner Meaning of the Bhagavad Gita. Part Three -- Meditation Techniques and Routines For All Levels of practices; Answers to Questions About the Spiritual Path; Glossary.