During the youthful period of mankind's spiritual evolution human fantasy created gods in man's own image, who, by the operations of their will were supposed to determine, or at any rate to influence, the phenomenal world. Man sought to alter the disposition of these gods in his own favour by means of magic and prayer.

People are like bicycles. They can keep their balance only as long as they keep moving.

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

It is a very grave mistake to think that the enjoyment of seeing and searching can be promoted by means of coercion and a sense of duty.

Playfullness is the essential feature of productive thought.

Imagination is vastly more important than intelligence.

I like the Swiss because by and large they are more humane than the other people aming whom I have lived.