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
The modern sophistry could
only succeed where, as in Athens, clever volubility was indigenous,
and where, moreover, the long series of philosophical systems that
had come and gone had accumulated huge piles of intellectual
rubbish. Against the Epicurean quietism, in fine, everything
revolted that was sound and honest in the Roman character so
thoroughly addressing itself to action.
Yet it found more
partisans than Euhemerism and the sophistic school, and this was
probably the reason why the police continued to wage war against
it longest and most seriously. But this Roman Epicureanism was not
so much a philosophic system as a sort of philosophic mask, under
which--very much against the design of its strictly moral founder--
thoughtless sensual enjoyment disguised itself for good society;
one of the earliest adherents of this sect, for instance, Titus
Albucius, figures in the poems of Lucilius as the prototype of
a Roman Hellenizing to bad purpose.