No American is ever made better off by pulling a fellow American down, and all of us are made better off whenever any one of us is made better off.

You know nothing for sure...except the fact that you know nothing for sure.

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.

Those who dare to fail miserably can achieve greatly.

If I don't have a woman every three days or so I get a terrible headache.

But Goethe tells us in his greatest poem that Faust lost the liberty of his soul when he said to the passing moment: "Stay, thou art so fair." And our liberty, too, is endangered if we pause for the passing moment, if we rest on our achievements, if we resist the pace of progress. Change is the law of life. And those who look only to the past are certain to miss the future.

I want to emphasize in the great concentration which we now place upon scientists and engineers how much we still need the men and women educated in the liberal tradition, willing to take the long look, undisturbed by prejudices and slogans of the moment, who attempt to make an honest judgment on difficult events.