Only through the medium of the public physical world can the mind of one person make a difference to the mind of another. The mind is in its own place and in each of us lies an inner life, the life of a ghostly Robinson Crusoe. People can see, hear, and jolt one another's bodies, but they are irremediably blind and deaf to the workings of one another's minds
Gilbert RyleMan need not be degraded to a machine by being denied to be a ghost in a machine. He might, after all, be a sort of animal, namely, a higher mammal. There has yet to be ventured the hazardous leap to the hypothesis that perhaps he is a man.
Gilbert RyleWhen two terms belong to the same category, it is proper to construct conjunctive propositions embodying them. Thus a purchaser may say that he bought a left-hand glove and a right- hand glove, but not that he bought a left-hand glove, a right- hand glove, and a pair of gloves. 'She came home in a flood of tears and a sedan-chair' is a well known joke based on the absurdity of conjoining terms of different types. Now the dogma of the Ghost in the Machine does just this. It maintains that there exist both bodies and minds.
Gilbert Ryle