A new idea comes suddenly and in a rather intuitive way, but intuition is nothing but the outcome of earlier intellectual experience.

When a man points a finger at someone else, he should remember that three of his fingers are pointing at himself. Do not worry about your difficulties in mathematics; I can assure you that mine are still greater.

The pioneers of a warless world are the young men (and women) who refuse military service.

Something deeply hidden had to be behind things.

Science has brought forth this danger, but the real problem is in the minds and hearts of men.

Falling in love is not at all the most stupid thing that people do - but gravitation cannot be held responsible for it.

I cannot write in English, because of the treacherous spelling. When I am reading, I only hear it and am unable to remember what the written word looks like.