Caius Suetonius Tranquillus: "The Lives of the Twelve Caesars"
Suetonius:
Tiberius used to try the grammarians, a class of men which, as I have already observed, he much affected, with such questions as these:
Who was Hecuba's mother? What name did Achilles assume among the virgins? What song was it that the Sirens sang?
