This Element is an opinionated introduction to Heidegger's phenomenology in Being and Time and surrounding works, framed in terms of Heidegger's debts to and divergence from Husserl's phenomenology. Section 1 situates Heidegger's and Husserl's phenomenology with respect to the 'identity-crisis of philosophy,' in particular the debate over whether philosophy is a science or a mere cataloguing of...