Man cannot live by bread alone. Every once in awhile he needs a salad.

I, interestingly, had dated a woman in the Eisenhower Administration briefly, and it was ironic to me 'cause I was trying to do toher what Eisenhower has been doing to the country for the last eight years.

I call that mind free which jealously guards its intellectual rights and powers, which calls no man master, which does not content itself with a passive or hereditary faith, [and] receives new truth as an angel from Heaven.

All over the world, relationships between men and women are very, very tricky and very difficult and you don't learn anything. It's not an exact science, so you can't learn anything. You're always going by instinct and your instinct betrays you because you want what you want when you want it.

More than at any other time in history, mankind faces a crossroads. One path leads to despair and utter hopelessness. The other, to total extinction. Let us pray we have the wisdom to choose correctly. I speak, by the way, not with any sense of futility, but with a panicky conviction of the absolute meaninglessness of existence which could easily be misinterpreted as pessimism. It is not. It is merely a healthy concern for the predicament of modern man.

What I do know about physics is that to a man standing on the shore, time passes quicker than to a man on a boat - especially if the man on the boat is with his wife.

I always thought that as long as man is mortal, he will never be relaxed.