“The fundamental book of Western physics,” said Heidegger about Aristotle’s Physics. Few works, it is true, will have had such a profound and lasting impact on our ways of thinking and, on one point at least, Heidegger is right: Aristotelian nature, in its opposition to the supernatural, to art and to history, is still our nature. By taking as its object the study of change, Physics delivers, in the shadow of the metaphysical debates which underlie it, analyzes which have nourished the scientific debate – including through their errors, their gaps and their inadequacies – and which are among the most fruitful in the history of philosophy.