Life is like a bicycle; keep moving on to maintain balance.

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.

The years of searching in the dark for a truth that one feels but cannot express, the intense desire and the alternations of confidence and misgiving until one breaks through to clarity and understanding, are known only to him who has experienced them himself.

I have survived two wars, two wives and Hitler.

Formerly, people thought that if matter disappeared from the universe, space and time would remain. Relativity declares that space and time would disappear with matter.

People like us, who believe in physics, know that the distinction between past, present, and future is only a stubbornly persistent illusion.

The one who walks alone, is likely to find himself in places no one has ever been.