Darwin himself was keenly aware of the danger of arrogance. One of my favorite quotes from the Origin of Species: "So profound is our ignorance, and so high o

Darwin himself was keenly aware of the danger of arrogance. One of my favorite quotes from the Origin of Species: "So profound is our ignorance, and so high our presumption, that we marvel when we hear of the extinction of an organic being; and as we do not see the cause, we invoke cataclysms to desolate the world, or invent laws on the duration of the forms of life!"