The most difficult thing is to know what we do know, and what we do not know.

Divide in yourself the mechanical from the conscious, see how little there is of the conscious, how seldom it works, and how strong is the mechanical - mechanical attitudes, mechanical intentions, mechanical thoughts, mechanical desires.

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

A symbol may serve to transfer our intuitions and to suggest new ones only so long as its meaning is not defined.

Ideas by themselves cannot produce change of being; your effort must go in the right direction, and one must correspond to the other.

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

Everything we do consciously remains for us.