According to Phranza, he assiduously studied the lives and actions of Alexander, Augustus, Constantine, and Theodosius. I have read somewhere, that Plutarch's Lives were translated by his orders into the Turkish language. If the sultan himself understood Greek, it must have been for the benefit of his subjects. Yet these lives are a school of freedom as well as valour.
Extra note by the Rev. H. H. Milman 1782 (Written), 1845 (Revised) —Von Hammer disdainfully rejects this fable of Mahomet's knowledge of languages. Knolles adds, that he delighted in reading the history of Alexander the Great, and of Julius Caesar. The former, no doubt, was the Persian legend, which, it is remarkable, came back to Europe, and was popular throughout the middle ages as the "Romaunt of Alexander." The founder of the Imperial dynasty of Rome, according to M. Von Hammer, is altogether unknown in the East. Mahomet was a great patron of Turkish literature: the romantic poems of Persia were translated, or imitated, under his patronage. Von Hammer vol ii. p. 268.