This is, no doubt, a dense and difficult text, where a lot of deep insights are packed into Aristotle’s short arguments. Our conversation is correspondingly slow and careful, but stick with us and you’ll be rewarded with a sense of Aristotle’s surprisingly fresh way of looking at motion, life, and the world of the senses, which is neither materialist nor spiritual, but something of a third way that avoids the paradoxes of those two extremes.