What did the tree learn from the earth to be able to talk with the sky?
The best time to plant a tree was 20 years ago. The second best time is now.
The creation of a thousand forests is in one acorn.
Someone is sitting in the shade today because someone planted a tree a long time ago.
Trees are poems that the earth writes upon the sky.

The greatest threat to our planet is the belief that someone else will save it.
I think that I shall never see a poem lovely as a tree.