It must not be overlooked, however, that the Roman race was

never a pure race
It must not be overlooked, however, that the Roman race was
never a pure race. It was a union of strong elements of
frontier democratic peoples, Sabines, Umbrians, Sicilians,
Etruscans, Greeks, being blended in republican Rome. Whatever
the origins, the worst outlived the best, mingling at last with
the odds and ends of Imperial slavery, the 'Sewage of Races'
('cloaca gentium') left at the Fall.