It is morally as bad not to care whether a thing is true or not, so long as it makes you feel good, as it is not to care how you got your money as long as you have got it.

The long fight to save wild beauty represents democracy at its best. It requires citizens to practice the hardest of virtues - self-restraint.

In nature, there is less death and destruction than death and transmutation.

Even the lifelong traveler knows but an infinitesimal portion of the Earth's surface. Those who have written best about the land and its wild inhabitants...have often been stay-at-home naturalists...concentrating their attention and affection on a relatively small area.

Change is a measure of time and, in the autumn, time seems speeded up. What was is not and never again will be; what is is change.

Time and space - time to be alone, space to move about - these may well become the great scarcities of tomorrow.

How many beautiful trees gave their lives that today's scandal should, without delay, reach a million readers.