Everything good is costly, and the development of personality is one of the most costly of all things. It is a matter of saying yes to oneself, of taking oneself as the most serious of tasks, of being conscious of everything one does, and keeping it constantly before one's eyes in all its dubious aspects.

We discover ourselves through others.

I am no longer alone with myself, and I can only artificially recall the scary and beautiful feeling of solitude. This is the shadow side of the fortune of love.

What you call knowledge is an attempt to impose something comprehensible on life.

Part of the human Self or Soul is not subject to laws of space and time.

There can be no transforming of darkness into light and of apathy into movement without emotion.

Life really does begin at forty. Up until then, you are just doing research.