If scientific discovery has not been an unalloyed blessing, if it has conferred on mankind the power not only to create but also to annihilate, it has at the same time provided humanity with a supreme challenge and a supreme testing

The ancient Greek definition of happiness was the full use of your powers along lines of excellence.

The American presidency will demand more than ringing manifestos issued from the rear of the battle. It will demand that the President place himself in the very thick of the fight; that he care passionately about the fate of the people he leads .

It shall be the policy of this nation to regard any nuclear missile launched from Cuba as an attack by the Soviet Union on the United States.

Acting on our own, by ourselves, we cannot establish justice throughout the world, but joined with other free nations, we can ... assist the developing nations to throw off the yoke of poverty.

Every area of trouble gives out a ray of hope; and the one unchangeable certainty is that nothing is certain or unchangeable.

It is true that my predecessor did not object, as I do, to pictures of one's golf skill in action. But neither, on the other hand, did he ever bean a Secret Serviceman.