I have no doubt that we will be successful in harnessing the sun's energy.
If sunbeams were weapons of war, we would have had solar energy centuries ago.
– Sir George Porter, quoted in The Observer, 26 August 1973
The use of solar energy has not been opened up because the oil industry does not own the sun.– Ralph Nader, quoted in Linda Botts, ed., Loose Talk, 1980
Thank God men cannot fly, and lay waste the sky as well as the earth.– Henry David Thoreau
There's so much pollution in the air now that if it weren't for our lungs there'd be no place to put it all.– Robert Orben
There is a sufficiency in the world for man's need but not for man's greed.– Mohandas K. Gandhi
Modern technology– Alan M. Eddison
Don't blow it - good planets are hard to find.– Quoted in Time
Nature provides a free lunch, but only if we control our appetites.– William Ruckelshaus, Business Week, 18 June 1990
I think the environment should be put in the category of our national security. Defense of our resources is just as important as defense abroad. Otherwise what is there to defend?– Robert Redford, Yosemite National Park dedication, 1985
Your grandchildren will likely find it incredible - or even sinful - that you burned up a gallon of gasoline to fetch a pack of cigarettes!– Paul MacCready, Jr.
We do not inherit the earth from our ancestors, we borrow it from our children.– Native American Proverb
When we heal the earth, we heal ourselves.– David Orr
How long can men thrive between walls of brick, walking on asphalt pavements, breathing the fumes of coal and of oil, growing, working, dying, with hardly a thought of wind, and sky, and fields of grain, seeing only machine-made beauty, the mineral-like quality of life?– Charles A. Lindbergh, Reader's Digest, November 1939
For a successful technology, reality must take precedence over public relations, for Nature cannot be fooled.– Richard P. Feynman
Living in the midst of abundance we have the greatest difficulty in seeing that the supply of natural wealth is limited and that the constant increase of population is destined to reduce the American standard of living unless we deal more sanely with our resources.– W.H. Carothers