Possibly the most interesting first impression of my life came from the world of dreams.

There is no possibility of remembering what has been found and understood, and later repeating it to oneself. It disappears as a dream disappears. Perhaps it is all nothing but a dream.

I've found that the chief difficulty for most people was to realize that they had really heard new things: that is things that they had never heard before. They kept translating what they heard into their habitual language. They had ceased to hope and believe there might be anything new.

Desire is when you do what you want, will is when you can do what you do not want.

People live in sleep, do everything in sleep, and do not know they are asleep.

The problem of Eternity, of which the face of the Sphinx speaks, takes us into the realm of the impossible. Even the problem of Time is simple in comparison with the problem of Eternity.

Philosophy is based on speculation, on logic, on thought, on the synthesis of what we know and on the analysis of what we do not know. Philosophy must include within its confines the whole content of science, religion and art.