Cyropaedia

At any rate, I shall be able to take forethought for everything with my human mind, I shall carry my weapons with my hands, I shall pursue with my horse and overthrow my opponent by the rush of my steed, but I shall not be bound fast to him in one growth, like the Centaurs.

Indeed, my state will be better than being grown together in one piece; for, in my opinion at least, the Centaurs must have had difficulty in making use of many of the good things invented for man; and how could they have enjoyed many of the comforts natural to the horse?

But if I learn to ride, I shall, when I am on horseback, do everything as the Centaur does, of course; but when I dismount, I shall dine and dress myself and sleep like other human beings; and so what else shall I be than a Centaur that can be taken apart and put together again?