Alice A. Bailey 
Esoteric Psychology Vol II 

The second volume of Esoteric Psychology deals exhaustively with the ray qualities controlling the life, consciousness and appearance of a human being on the physical plane. Every man in his totality is subject to the laws of evolution by which he proceeds from the One to the many and back to the One, enriched by the experience of life in form and capable of contributing the results of that experience to the larger life which pervades him.