I love to travel, but hate to arrive.

In the matter of physics, the first lessons should contain nothing but what is experimental and interesting to see. A pretty experiment is in itself often more valuable than twenty formulae extracted from our minds.

As an elderly man, I have remained estranged from the society here.

I know very well that many scientists consider dowsing as they do astrology, as a type of ancient superstition. According to my conviction this is, unjustified. The dowsing rod is a simple instrument which shows the uncanny reaction of the human nervous system to certain factors which are unknown to us at this time.

To be free means to be independent, not to be influenced by what others think and say.

Music has no effect on research work, but both are born of the same source and complement each other through the satisfaction they bestow

It is best, it seems to me, to separate one's inner striving from one's trade as far as possible. It is not good when one's daily break is tied to God's special blessing.