Environmentalist Quotes and aphorisms about economic Greta Thunburg ,, The climate crisis is both the easiest and the hardest issue we have ever faced. The easiest becaus... Greta Thunburg Paul Hawken Paul Hawken ,, We need to revise our economic thinking to give full value to our natural resources. This revised e... Paul Hawken Bill McKibben Johan Rockstrom Johan Rockstrom ,, There is an old belief that solving environmental problems can only be achieved by first building e... Johan Rockstrom Ma Jun