Environmentalist Quotes and aphorisms about would John Muir John Muir John Muir ,, During my first years in the Sierra, I was ever calling on everybody within reach to admire them, b... Greta Thunburg Paul Hawken Paul Hawken ,, I doubt very much that the chief executives of any of the Fortune 500 corporations can name five ed... Luther Burbank David R. Brower David R. Brower Joseph Wood Krutch