“There are a great many chemical processes that can take place only in the absence of light. Exactly in the same way many psychic processes can take place only in the dark. Even a feeble light of consciousness is enough to change completely the character of a process, while it makes many of them altogether impossible. Our inner psychic processes (our inner alchemy) have much in common with those chemical processes in which light changes the character of the process and they are subject to analogous laws.“

– G.I. Gurdjieff: In Search of Being: The Fourth Way to Consciousness