On the other hand, I like the attitude and words as can be seen in Carl Sagan. He is speaking down or speaking up of any one way of looking at matters. He is willing to concede that, our understanding has limits, even if our knowledge may have expanded far beyond any time in history. His words are devoid of pride. Rather, he sounds most willing to continue learning and exploring, without ever coming to a full understanding of reality. Such a man is willing to look into possibilities, even if those possibilities may be contrary to expectations. We need more people to think like that. We need people to have such humility. Otherwise, mankind is like a beautiful, powerful car that will speed over the edge. Once it hits the ground, the pretty paint won't save it!