Earnestly I must exert myself in order to return as much as I have received.

Memory is deceptive because it is colored by today's events.

What is the meaning of human life, or, for that matter, of the life of any creature? To know the answer to this question means to be religious. You ask: Does it make any sense, then, to pose this question? I answer: The man who regards his fellow creatures as meaningless is not merely unhappy but hardly fit for life.

One must shy away from questionable undertakings, even when they bear a high-sounding name.

A tyranny based on ... deception and maintained by terror must inevitably perish from the poison it generates within itself.

A true genius admits that he/she knows nothing.

Although I tried to be universal in thought, I am European by instinct and inclination.