High Quality Content by WIKIPEDIA articles! The Concept of Mind is a 1949 book by philosopher Gilbert Ryle that has been seen as a founding document in the philosophy of mind, which received professional recognition as a distinct and important branch of philosophy only after 1950.The Concept of Mind argues that "mind" is "a philosophical illusion hailing chiefly from Descartes and sustained by logical errors and `category mistakes` which have become habitual." The work has been cited as having "put the final nail in the coffin of Cartesian dualism."