Chapter 1 SKILLS proposes a regimentation of skill. It differentiates skills from habits, instincts, talents, virtues, and other sorts of capacities; it argues for the legitimacy of this regimentation by locating skills in the broader explanatory contexts, from action theory and history of philosophy, to biology, evolutionary psychology, as well as anthropology; and it argues that this way of demarcating skills captures the core subject of Ryle’s Chapter 2 “Knowing How and Knowing That” of The Concept of Mind. That of skills, it is suggested, is a natural kind of interest for the study of intelligence and action, and with a long pedigree, starting from Aristotle’s conception of technē.