Physical fitness is not only one of the most important keys to a healthy body, it is the basis of dynamic and creative intellectual activity.

We go into space because whatever mankind must undertake, free men must fully share.

Ask not what your community can do for you; ask what your community can not do for anyone else.

We cannot reform the world.... Uncle Sugar is as dangerous a role for us to play as Uncle Shylock.

When we got into office, the thing that surprised me most was to find that things were just as bad as we'd been saying they were.

Khrushchev reminds me of the tiger hunter who has picked a place on the wall to hang the tiger's skin long before he has caught the tiger. This tiger has other ideas.

There are indications because of new inventions, that 10, 15, or 20 nations will have a nuclear capacity, including Red China, by the end of the Presidential office in 1964. This is extremely serious. I think the fate not only of our own civilization, but I think the fate of world and the future of the human race, is involved in preventing a nuclear war.