Environmentalist Quotes and aphorisms about make John Muir ,, The more I see of deer, the more I admire them as mountaineers. They make their way into the heart ... John Muir ,, No traveler, whether a tree lover or not, will ever forget his first walk in a sugar-pine forest. T... Aldo Leopold Greta Thunburg Greta Thunburg Paul Hawken Paul Hawken ,, When cattle ranchers clear rain forests to raise beef to sell to fast-food chains that make hamburg... Luther Burbank David R. Brower David R. Brower