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.

As long as his strength permits, the poor mortal must always climb new mountains.

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

It is certainly a good thing always to forgive with generosity, but it is no doubt just never to forget the wrongs received: they belong to the route that leads to inner maturity.

Your identity is like your shadow: not always visible and yet always present.

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