P.D. Ouspensky
Author: P.D. Ouspensky
Publisher: Vintage (1971)

From this point of view, self-study becomes the study of the working of different energies in oneself; of their present wastage in useless and harmful functions, and their possible accumulation for the purpose of self-development. The Study of hydrogens and their relation to one another also helps us to understand centres and their different speeds. Intellectual centre works with H 48, moving and instinctive centres with H 24, emotional centre should work with H 12, but it never receives the right fuel and never works as it should. If we could make it work faster, it would make a great difference to our perceptions and other faculties.