In my personal experience I have hardly come to know the wretchedness of mankind better than as a result of the general theory of relativity and everything connected to it. But it doesn't bother me.

The most difficult part about understanding something is that we understand it all.

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.

A single bomb of this type, carried by boat and exploded in a port, might very well destroy the whole port, together with some of the surrounding territory.

The definition of genius is taking the complex and making it simple.

Realising the healthy international relations can be created only among populations made up of individuals who themselves are healthy and enjoy a measure a independence, the United Nations elaborated a Universal Declaration of Human Rights, which was adopted by the U.N. General Assembly on December 10, 1948.

All religions, arts and sciences are branches of the same tree.