-Philosophari est mihi necesse, at paucis, nam omnino haut placet. Degustandum ex ea, non in eam ingurgitandum censeo.-
Nevertheless the poem on Morals and the instructions in Oratory, which were found among the writings of Cato, may be regarded as the Roman quintessence or, if the expression be preferred, the Roman -caput mortuum- of Greek philosophy and rhetoric. The immediate sources whence Cato drew were, in the case of the poem on Morals, presumably the Pythagorean writings on morals (along with, as a matter of course, due commendation of the simple ancestral habits), and, in the case of the book on Oratory, the speeches in Thucydides and more especially the orations of Demosthenes, all of which Cato zealously studied. Of the spirit of these manuals we may form some idea from the golden oratorical rule, oftener quoted than followed by posterity, “to think of the matter and leave the words to follow from it."(68)
Medicine
Similar manuals of a general elementary character were composed by Cato on the Art of Healing, the Science of War, Agriculture, and Jurisprudence—all of which studies were likewise more or less under Greek influence. Physics and mathematics were not much studied in Rome; but the applied sciences connected with them received a certain measure of attention. This was most of all true of medicine. In 535 the first Greek physician, the Peloponnesian Archagathus, settled in Rome and there acquired such repute by his surgical operations, that a residence was assigned to him on the part of the state and he received the freedom of the city; and thereafter his colleagues flocked in crowds to Italy. Cato no doubt not only reviled the foreign medical practitioners with a zeal worthy of a better cause, but attempted, by means of his medical manual compiled from his own experience and probably in part also from the medical literature of the Greeks, to revive the good old fashion under which the father of the family was at the same time the family physician. The physicians and the public gave themselves, as was reasonable, but little concern about his obstinate invectives: at any rate the profession, one of the most lucrative which existed in Rome, continued a monopoly in the hands of the foreigners, and for centuries there were none but Greek physicians in Rome.
Mathematics