On Being in the World, first published in 1990, illumines a neglected but important area of Wittgensteins philosophy, revealing its pertinence to the central concerns of contemporary analytic philosophy.The starting point is the idea of continuous aspect perception, which connects Wittgensteins treatment of certain issues relating to aesthetics with fundamental questions in the philosophy of psychology. Professor Mulhall indicates parallels between Wittgensteins interests and Heideggers Being and Time, demonstrating that Wittgensteins investigation of aspect perception is designed to cast light on much more than a bizarre type of visual experience: in reality, it highlights what is distinctivelyhuman about our behaviour in relation to things in the world, what it is that distinguishes our practical activity from that of automata.On Being in the World remains an invaluable resource for students of Wittgensteins philosophy, as well as anyone interested in negotiating the division between analytic and continental philosophy.