Environmentalist Quotes and aphorisms about good John Muir John Muir John Muir John Muir ,, Bread without flesh is a good diet, as on many botanical excursions I have proved. Tea also may eas... John Muir John Muir Paul Hawken Paul Hawken ,, We need to revise our economic thinking to give full value to our natural resources. This revised e... John Ray David R. Brower