Man’s possibilities are very great. You cannot conceive even a shadow of what man is capable of attaining. But nothing can be attained in sleep. In the consciousness of a sleeping man his illusions, his ‘dreams’ are mixed with reality. He lives in a subjective world and he can never escape from it. And this is the reason why he can never make use of all the powers he possesses and why he always lives in only a small part of himself. . . . He lives in sleep all his life and he dies in sleep (Ouspensky).