Side by side with rhetoric and grammar, Philosophy made its appearance at Rome. There was no importation from Greece to which a more determined resistance was made from the first by the national party. In the consulship of Strabo and Messala (162 B.C.) a decree was passed banishing philosophers and rhetoricians from Rome. Seven years later took place the embassy of the three leaders of the most celebrated schools of thought, Diogenes the Stoic, Critolaus the Peripatetic, and Carneades the New Academician. The subtilty and eloquence of these disputants rekindled the interest in philosophy which had been smothered, not quenched, by the vigorous measures of the senate. There were two reasons why an interest in these studies was dreaded. First, they tended to spread disbelief in the state religion, by which the ascendency of the oligarchy was in great measure maintained; secondly, they distracted men's minds, and diverted them from that exclusive devotion to public life which the old _régime_ demanded. Nevertheless, some of the greatest nobles ardently espoused the cause of free thought. After the war with Perseus, and the detention of the Achaean hostages in Rome, many learned Greeks well versed in philosophical inquiries were brought into contact with their conquerors in a manner well calculated to promote mutual confidence. The most eminent of these was Polybius, who lived for years on terms of intimacy with Scipio and Laelius, and imparted to them his own wide views and varied knowledge. From them may be dated the real study of Philosophy at Rome. They both attained the highest renown in their lifetime and after their death for their philosophical eminence, [12] but apparently they left no philosophical writings. The spirit, however, in which they approached philosophy is eminently characteristic of their nation, and determined the lines in which philosophic activity afterwards moved.