[on criticism] The only way it gets to me is that it demonstrates a deterioration of the power of restrained, critical, rational thought that was once more ubiquitous in our society. In the sixties and seventies, there was such a high regard in this country for the achievements of human beings in science, in technology, in space exploration. And in some ways, we've turned into this wimpy, astrology-loving, angel-loving, pseudo-scientific culture that no longer has that ability. We've gotten lazy in our willingness to use our brains.