We choose to go to the moon in this decade and do the other things. Not because they are easy, but because they are hard.

The great revolution in the history of man, past, present and future, is the revolution of those determined to be free.

Forbidden fruit tastes sweet, but its aftertaste is bitter.

If we are strong, our strength will speak for itself. If we are weak, words will be of no help.

We've spent half the expenditures, we've wrecked our budget on all these other domestic programs, and the only justification for it, in my opinion, to do it in the pell-mell fashion is because we hope to beat them and demonstrate that starting behind them, as we did by a couple of years, by God, we passed them. I think it would be a helluva thing for us.

My fellow Americans, ask not what your country can do for you, ask what you can do for your country.

I think this is the most extraordinary collection of talent, of human knowledge, that has ever been gathered at the White House - with the possible exception of when Thomas Jefferson dined alone.