I have a friend who's an artist, and he sometimes takes a view which I don't agree with. He'll hold up a flower and say, 'Look how beautiful it is,' and I'll agree. But then he'll say, 'I, as an artist, can see how beautiful a flower is. But you, as a scientist, take it all apart and it becomes dull.' I think he's kind of nutty. [...] There are all kinds of interesting questions that come from a knowledge of science, which only adds to the excitement and mystery and awe of a flower. It only adds. I don't understand how it subtracts.