Artists and creative workers - people who have accomplished work worthwhile have had a very high sense of the way to do things. They haven't been contented with mediocrity. They haven't confined themselves to the beaten tracks; they have never been satisfied to do things just as others do them, but always a little better. Few are those who see with their own eyesand feel with their own hearts.

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

It is true that my parents were worried because I began to speak fairly late, so that they even consulted a doctor. I can't say how old I was - but surely not less than three.

I have come to know the mutability of all human relationships and have learned to insulate myself against both heat and cold so that a temperature balance is fairly well assured.

Solutions to tough problems should be made as simple as possible - and no simpler.

The creative principle [of science] resides in mathematics.

There is an atmosphere of well-sounding oratory that likes to attach itself to dress clothes. Away with it!