There are those, I know, who will say that the liberation of humanity, the freedom of man and mind, is nothing but a dream. They are right. It is the American dream.

Our reliance in this country is on the inquiring, individual human mind. Our strength is founded there; our resilience, our ability to face an ever-changing future and to master it. We are not frozen into the backward-facing impotence of those societies, fixed in the rigidness of an official dogma, to which the future is the mirror of the past. We are free to make the future for ourselves.

The task of man is not to discover new worlds, but to discover his own world in terms of human comprehension and beauty.

There are those, I know, who will say that the liberation of humanity, the freedom of man and mind, is nothing but a dream. They are right. It is the American dream.

We have no choice but to be guilty. God is unthinkable if we are innocent.

There is only one thing more painful than learning from experience and that is not learning from experience.

Never in all their history have men been able truly to conceive of the world as one: a single sphere, a globe, having the qualities of a globe, a round earth in which all the directions eventually meet, in which there is no center because every point, or none, is center - an equal earth which all men occupy as equals. The airman's earth, if free men make it, will be truly round: a globe in practice, not in theory.