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

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

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

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

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

Personal dignity is to be measured with the yardstick of one's conscience, not with that of other people's judgement.

Unlike money, hope is all: for the rich as well as for the poor.