The philosopher Ernst Mach once got on a bus, and saw a scruffy unkempt bookish-looking person at the far end. He thought to himself (1) That man is a shabby pedagogue. In fact, Mach was seeing himself in a large mirror at the far end of the bus, of the sort conductors used to help keep track of things. He eventually realized this, and thought to himself: (2) I am that man. (3) I am a shabby pedagogue.

Author: John R. Perry