I must seem like an ostrich who forever burries its head in the relativistic sands in order not to face the evil quanta.

The most evident difference springs from the important part which is played in man by a relatively strong power of imagination and by the capacity to think, aided as it is by language and other symbolically devices.

Between the difficulties, one hides the opportunity

If you have never failed, you have never tried anything new.

A knowledge of the existence of something we cannot penetrate, of the manifestations of the profoundest reason and the most radiant beauty - it is this knowledge and this emotion that constitute the truly religious attitude; in this sense, and in this alone, I am a deeply religious man.

One must console oneself with the thought that time has a sieve through which most of these important things run into the ocean of oblivion and what remains after this selection is often still trite and bad.

It is my conviction that killing under the cloak of war is nothing but an act of murder.