Humans were free before the word freedom became necessary.

Great art is indefinable but that's all right; it exists anyway.

most of my wandering in the desert i've done alone. not so much from choice as from necessity - i generally prefer to go into places where no one else wants to go. i find that in contemplating the natural world my pleasure is greater if there are not too many others contemplating it with me, at the same time.

We are preoccupied with time. If we could learn to love space as deeply as we are now obsessed with time, we might discover a new meaning in the phrase to live like men.

The rich can buy everything but health, virtue, friendship, wit, good looks, love, pride, intelligence, grace, and, if you need it, happiness.

Some of my ancestors fought in the American Revolution. A few more wore red coats, a few wore blue coats, and the rest wore no coats at all. We never did figure out who won that war.

Only the half-mad are wholly alive.