The dogma of the Ghost in the Machine ... maintains that there exist both bodies and minds; that there occur physical processes and mental processes; that there are mechanical causes of corporeal movements and mental causes of corporeal movements.

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

... my today's self perpetually slips out of any hold of it that I may try to take.

To see is one thing; to picture or visualise is another. A person can see things, only when his eyes are open, and when his surroundings are illuminated; but he can have pictures in his mind's eye, when his eyes are shut and when the world is dark.

Absolute solitude is on this showing the ineluctable destiny of the soul. Only our bodies can meet.

Man need not be degraded to a machine by being denied to be a ghost in a machine.

Dreamers of dreams may be pathfinders; but they may be mere vagrants. Of those who depart from the pavements, only a few are explorers: the rest are mere jaywalkers