For in the true nature of things, if we rightly consider, every green tree is far more glorious than if it were made of gold and silver.
What did the tree learn from the earth to be able to talk with the sky?
What we are doing to the forests of the world is but a mirror reflection of what we are doing to ourselves and to one another.
The best time to plant a tree was 20 years ago. The second best time is now.
Time spent amongst trees is never time wasted.
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.
He that plants trees loves others beside himself.
Trees are poems that the earth writes upon the sky.
The best friend on earth of man is the tree. When we use the tree respectfully and economically, we have one of the greatest resources on the earth.
A nation that destroys its soils destroys itself. Forests are the lungs of our land, purifying the air and giving fresh strength to our people.
A society grows great when old men plant trees whose shade they know they shall never sit in.
Until you dig a hole, you plant a tree, you water it and make it survive, you haven't done a thing. You are just talking.
The true meaning of life is to plant trees, under whose shade you do not expect to sit.
The greatest threat to our planet is the belief that someone else will save it.
In a forest of a hundred thousand trees, no two leaves are alike. And no two journeys along the same path are alike.
I think that I shall never see a poem lovely as a tree.