God cannot be known by the outgoing faculties, by the intellect or the vital airs called the pranas. He can be known only by the soul: like alone can know the like. When is the soul liberated? When it is analysed from mind and the outgoing faculties.
This book explains step by step who a master is, what he does, the many grades of mastership, and how one can find and recognize a perfect master.
First edition 1967