Alexander the GreatLandon had made an unsuccessful attempt at the recitation，and the doctor，somewhat nettled，said：“Landon，you don't seem to be getting on very fast in this subject．You seem to lack ambition．Why，at your age Alexander the Great had conquered half the world．” “Yes，” said Landon，“he couldn't help it，for you will recall the fact，doctor，that Alexander the Great had Aristotle for a teacher．”