Barry Commoner, in his book The Closing Circle: Nature, Man and Technology introduced us to the four ecological laws that govern nature, machinery and cycles. 1. Everything is connected to everything else. 2. Everything must go somewhere. 3. Nature knows best. 4. There is no such thing as a free lunch.
Come for a dose of inspiration from some of the greatest (and at times oddest) minds of history. The table is set. Come eat.