Not sense data or atoms or electrons or packets of energy, but purposes, interests, and meanings, constitute the underlying facts of human experience.

This metropolitan world, then, is a world where flesh and blood is less real than paper and ink and celluloid.

Adding highway lanes to deal with traffic congestion is like loosening your belt to cure obesity.

For most Americans, progress means accepting what is new because it is new, and discarding what is old because it is old.

The cycle of the machine is now coming to an end. Man has learned much in the hard discipline and the shrewd, unflinching grasp of practical possibilities that the machine has provided in the last three centuries: but we can no more continue to live in the world of the machine than we could live successfully on the barren surface of the moon.

If we never met again in our lives I should feel that somehow the whole adventure of existence was justified by my having met you.

The way people in democracies think of the government as something different from themselves is a real handicap. And, of course, sometimes the government confirms their opinion.