Only when the last tree has died and the last river been poisoned and the last fish been caught will we realise we cannot eat money.

The best time to plant a tree was 20 years ago. The next best time is now.

Trees are the earth's endless effort to speak to the listening heaven.

No wonder the hills and groves were God's first temples, and the more they are cut down and hewn into cathedrals and churches, the farther off and dimmer seems the Lord himself.

I never saw a discontented tree. They grip the ground as though they liked it, and though fast rooted they travel about as far as we do. They go wandering forth in all directions with every wind, going and coming like ourselves, traveling with us around the sun two million miles a day, and through space heaven knows how fast and far!