Claudius knew a good deal about Etruscan history. Among his many learned researches he had written a twenty-volume study of the Etruscans, in Greek, as well as compiling an Etruscan dictionary. On this occasion he could not resist explaining to the assembled senators, who might have begun to feel they were on the receiving end of a bit of a lecture, that outside Rome there was a different version of the story of Servius Tullius.