This volume showcases Ryle’s deep interest in the notion of thinking and contains many of his major pieces, including his classic essays ‘Knowing How and Knowing That’, ‘Philosophical Arguments’, ‘Systematically Misleading Expressions’, and ‘A Puzzling Element in the Notion of Thinking’. He ranges over an astonishing number of topics, including feelings, pleasure, sensation, forgetting and concepts and in so doing hones his own philosophical stance, steering a careful path between behaviourism and Cartesianism.