It is related that Mithridates, the ancient warrior-king, knew the name of every soldier in his great army, and conversed fluently in twenty-two dialects. Pliny relates that Charmides could repeat the contents of every book in his large library. Hortensius, the Roman orator, had a remarkable memory which enabled him to retain and recollect the exact words of his opponent's argument, without making a single notation. On a wager, he attended a great auction sale which lasted over an entire day, and then called off in their proper order every object sold, the name of its purchaser, and the price thereof. Seneca is said to have acquired the ability to memorize several thousand proper names, and to repeat them in the order in which they had been given him, and also to reverse the order and call off the list backward. He also accomplished the feat of listening to several hundred persons, each of whom gave him a verse; memorizing the same as they proceeded; and then repeating them word for word in the exact order of their delivery--and then reversing the process, with complete success. Eusebius stated that only the memory of Esdras saved the Hebrew Scriptures to the world, for when the Chaldeans destroyed the manuscripts Esdras was able to repeat them, word by word to the scribes, who then reproduced them. The Mohammedan scholars are able to repeat the entire text of the Koran, letter perfect. Scaliger committed the entire text of the Iliad and the Odyssey, in three weeks. Ben Jonson is said to have been able to repeat all of his own works from memory, with the greatest ease.