We need wilderness whether or not we ever set foot in it. We need a refuge even though we may never need to go there. We need the possibility of escape as surely as we need hope.

Do not burn yourselves out. Be as I am - a reluctant enthusiast... a part-time crusader, a half-hearted fanatic. Save the other half of yourselves and your lives for pleasure and adventure.

A world without open country would be universal jail.

Representative government has broken down. Our politicians represent not the people who vote for them but the commercial interests who finance their election campaigns. We have the best politicians that money can buy.

America My Country: last nation on earth to abolish human slavery; first of all nations to drop the nuclear bomb on our fellow human beings.

Nothing could be older than the daily news, nothing deader than yesterday's newspaper.

When the philosopher's argument becomes tedious, complicated, and opaque, it is usually a sign that he is attempting to prove as true to the intellect what is plainly false to common sense.