One must take what nature gives as one finds it.

Put your hand on a hot stove for a minute and it seems like an hour. Sit with a pretty girl for an hour, and it seems like a minute.

A theory can be proved by experiment; but no path leads from experiment to the birth of a theory.

Man, surrounded by facts, permitting himself no surprise, no intuitive flash, no great hypothesis, no risk, is in a locked cell. Ignorance cannot seal the mind and imagination more securely.

I believe in intuitions and inspirations...I sometimes FEEL that I am right. I do not KNOW that I am.

You cannot love a car the way you love a horse. The horse brings out human feelings the way machines cannot do. Things like machines may develop or neglect certain things in people ... Machines make our life impersonal and stultify certain elements in us and create an impersonal environment.

My life is a simple thing that would interest no one. It is a known fact that I was born, and that is all that is necessary.