world in which there are such things as music and sex, laughter and tears, mountains and mathematics, eagles and earthworms, statues and symphonies and snowflakes and sunsets—and in which we humans find ourselves in the middle of it all—is bound to discover that the quest for truth, for reality, for what we can be sure of, is infinitely more complicated than simple yes-and-no questions will allow. There is appropriate complexity and appropriate simplicity. The more we learn, the more we discover