The problem that confronts some of you younger ones – you've got to find an alternative to war. War is something men have hated but yet cherished. Out of wars have come profit of various sorts, power, glory. Sometimes out of them has become a defense of freedom. But you will not get that out of the kind of war we fight now with the weapons that our great scientists have given us. We have got to find a substitute for war, and the substitute isn't surrender.

Debate with Barry Goldwater, University of Arizona campus, Tucson, Arizona, November 1961