Gilbert Ryle , was a British philosopher, and a representative of the generation of British ordinary language philosophers influenced by Wittgenstein's insights into language, and is principally known for his critique of Cartesian dualism, for which he coined the phrase "the ghost in the machine". Some of his ideas in the philosophy of mind have been referred to as "behaviourist" . Ryle himself said that the "general trend of this book will undoubtedly, and harmlessly, be stigmatised as 'behaviourist'."