              These two methods reflect in different ways Aristotle’s deepest motivations for doing philosophy in the first place. “Human beings began to do philosophy,” he says, “even as they do now, because of wonder, at first because they wondered about the strange things right in front of them, and then later, advancing little by little, because they came to find greater things puzzling” (Met. 982b12). Human beings philosophize, according to Aristotle, because they find aspects of their experience puzzling. The sorts of puzzles we encounter in thinking about the universe and our place within it—aporiai, in Aristotle’s terminology—tax our understanding and induce us to philosophize.