King Alexander had a very remarkable horse which was called Bucephalus, either on account of the fierceness of its aspect, or because it had the figure of a bull’s head marked on its shoulder. It is said, that he was struck with its beauty when he was only a boy, and that it was purchased from the stud of Philonicus, the Pharsalian, for thirteen talents. When it was equipped with the royal trappings, it would suffer no one except Alexander to ............