Science has brought forth this danger, but the real problem is in the minds and hearts of men.

It is difficult even to attach a precise meaning to the term "scientific truth." So different is the meaning of the word "truth" according to whether we are dealing with a fact of experience, a mathematical proposition or a scientific theory. "Religious truth" conveys nothing clear to me at all.

In scientific thinking are always present elements of poetry. Science and music requires a thought homogeneous.

There is no scientific antidote, only education. You've got to change the way people think. I am not interested in disarmament talks between nations . . . What I want to do is to disarm the mind. After that, everything else will automatically follow. The ultimate weapon for such mental disarmament is international education.

Information is not knowledge. The only source of knowledge is experience. You need experience to gain wisdom.

Concern for man himself must always constitute the chief objective of all technological effort

On the left-hand side of the field equation we may add the fundamental tensor guv, multiplied by a universal constant, -λ, at present unknown, without destroying the general covariance.