The creation of a thousand forests is in one acorn.
The greatest oak was once a little nut who held its ground.
Trees are poems that the earth writes upon the sky.
Someone's sitting in the shade today because someone planted a tree a long time ago.
The best time to plant a tree was 20 years ago. The second best time is now.
Trees are the earth's endless effort to speak to the listening heaven.
In every walk with nature, one receives far more than he seeks.
When you have seen one ant, one bird, one tree, you have not seen them all.
The clearest way into the Universe is through a forest wilderness.