A political animal can be defined as a body that will go on circulating a petition even with its heart cut out.

It is the beginning of wisdom when you recognize that the best you can do is choose which rules you want to live by, and it's persistent and aggravated imbecility to pretend you can live without any.

That is all the National Parks are about. Use, but do no harm.

If the national park is, as Lord Bryce suggested, the best idea America has ever had, wilderness preservation is the highest refinement of that idea.

Values, both those that we approve and those that we don't, have roots as deep as creosote rings, and live as long and grow as slowly

Death is a convention, a certification to the end of pain, something for the vital statistics book, not binding upon anyone but the keepers of graveyard records.

I shall be richer all my life for this sorrow