Quotes from environmentalists like Joseph Banks, William Bartram, Henry Walter Bates, David Brower, Luther Burbank, David Douglas, Garrett Hardin, Paul Hawken, Joseph Wood Krutch, Richard Leakey, Aldo Leopold, Roberto Burle Marx, Donella Meadows, John Muir, Roger Tory Peterson, John Ray, Will StegerKW: greenpeace activist