Meher Baba said of God Speaks that it was the first and last book of its kind.
Short biography of Meher Baba

God Speaks
Hardcover 313 pp
The many diffuse concepts of spiritual truth as well as new and detailed thought patterns are clarified and brought together in this monumental work. The book describes the intricate process of reincarnation and the inward journey along the spiritual path as the soul consciously returns to the Oversoul of its origin. It covers "The Planes," "States of Divine Consciousness" and includes seven charts, supplements, glossary and index.
2nd edition, 1973.