Man is, at one and the same time, a solitary being and a social being.

It seems to me an utterly futile task to prescribe rules and limitations for the conduct of war. War is not a game; hence one cannot wage war by rules as one would in playing games. Our fight must be against war itself. The masses of people can most effectively fight the institution of war by establishing an organization for the absolute refusal of military service.

E=mc2. Energy equals mass times the speed of light squared

How insidious Nature is when one is trying to get at it experimentally.

There is separation of colored people from white people in the United States. That separation is not a disease of colored people. It is a disease of white people. I do not intend to be quiet about it.

Do not worry about your difficulties in Mathematics. I can assure you mine are still greater.

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