Earth provides enough to satisfy every man's needs, but not every man's greed.
We do not inherit the earth from our ancestors; we borrow it from our children
There are no passengers on spaceship earth. We are all crew.
The earth is what we all have in common.
And forget not that the earth delights to feel your bare feet and the winds long to play with your hair.
Until man duplicates a blade of grass, nature can laugh at his so called scientific knowledge.
When one tugs at a single thing in nature, he finds it attached to the rest of the world.
Look deep into nature, and then you will understand everything better.
What is the use of a house if you haven't got a tolerable planet to put it on?
I love not man the less, but Nature more.
The use of solar energy has not been opened up because the oil industry does not own the sun.
The earth has a skin and that skin has diseases; one of its diseases is called man.
There is pleasure in the pathless woods, there is rapture in the lonely shore, there is society where none intrudes, by the deep sea, and music in its roar; I love not Man the less, but Nature more.
Those who contemplate the beauty of the earth find reserves of strength that will endure as long as life lasts.
Till now man has been up against Nature; from now on he will be up against his own nature.
The proper use of science is not to conquer nature but to live in it.
Because we don't think about future generations, they will never forget us.
To see a world in a grain of sand and a heaven in a wildflower.
I believe in God, only I spell it Nature.
I would feel more optimistic about a bright future for man if he spent less time proving that he can outwit Nature and more time tasting her sweetness and respecting her seniority.