Creativity requires the courage to let go of certainties.

Loving becomes, and the ability to love, becomes one of the most important things in life.

The pace of science forces the pace of technique. Theoretical physics forces atomic energy on us; the successful production of the fission bomb forces upon us the manufacture of the hydrogen bomb. We do not choose our problems, we do not choose our products; we are pushed, we are forced -- by what? By a system which has no purpose and goal transcending it, and which makes man its appendix.

Man can only know the nagation, never the position of ultimate reality.

I want to mention that Marx shares something, if you don't mind the comparison, with the Old Testament: many people talk about him, but nobody has read him.

Education is identical with helping the child realize his potentialities. The opposite of education is manipulation, which is based on the absence of faith in the growth of potentialities and the connection that a child will be right only if the adults put into him what is desirable and suppress what seems to be undesirable.

Not he who has much is rich, but he who gives much.