Secret thoughts are only half free: they fly undisturbed in the skies of the inner freedom, but they can never leave them.

A secret remains a secret until you make someone promise never to reveal it.

When you would suffocate or ignore dissent, remember how many times you dissented.

If you are living in the past or in the future, you will never find a meaning in the present.

Do not confuse fantasy with imagination; the former consumes itself in daydreaming, the latter stimulates creativity in the arts and in the sciences.

Sometimes true tolerance requires an extraordinary strength, which we are often too weak to exercise.

Secret thoughts are only half free: they fly undisturbed in the skies of the inner freedom, but they can never leave them.