The Ghost in the Machine is a 1967 book about philosophical psychology by Arthur Koestler. The title is a phrase (see ghost in the machine) coined by the Oxford philosopher Gilbert Ryle to describe the Cartesian dualist account of the mind–body relationship. Koestler shares with Ryle the view that the mind of a person is not an independent non-material entity, temporarily inhabiting and governing the body. The work attempts to explain humanity's self-destructive tendency in terms of individual and collective functioning, philosophy, and overarching, cyclical political–historical dynamics, peaking in the nuclear weapons arena. Source: Wikipedia (en)