Please note that Mommsen uses the AUC chronology (Ab Urbe Condita), i.e. from the founding of the City of Rome. You can use this reference table to have the B.C. dates
From: The History of Rome, by Theodor Mommsen
Translated with the sanction of the author by William Purdie Dickson
The beginnings of scientific culture, and even of authorship relating to it, also fall within this epoch. The instruction hitherto given had been substantially confined to reading and writing and a knowledge of the law of the land.(65)
65. Plautus (Mostell. 126) says of parents, that they teach their children -litteras-, -iura-, -leges-; and Plutarch (Cato Mai. 20) testifies to the same effect.
But a closer contact with the Greeks gradually suggested to the Romans the idea of a more general culture; and stimulated the endeavour, if not directly to transplant this Greek culture to Rome, at any rate to modify the Roman culture to some extent after its model.
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Reference address : https://www.ellopos.net/elpenor/rome/3-14-literature-art.asp?pg=99