Little was done by these eminent men to illustrate or enforce their favourite systems by their writings. Even the productions of Varro were calculated rather to excite to the study of philosophy, than to aid its progress. The new Academy was more fortunate in the support of Cicero, who has asserted and vindicated its principles with equal industry and eloquence. From their first introduction, the doctrines of the new Academy had been favourably received at Rome. The tenets of the dogmatic philosophers were so various and contradictory, were so obstinately maintained, and rested on such precarious foundations, that they afforded much scope and encouragement to scepticism. The plausible arguments by which the most discordant opinions were supported, led to a distrust of the existence of absolute truth, and to an acquiescence in such probable conclusions, as were adequate to the practical purposes of life. The speculations, too, of the new Academy, were peculiarly fitted to the duties of a public speaker, as they left free the field of disputation, and habituated him to the practice of collecting arguments from all quarters, on every doubtful question. Hence it was that Cicero addicted himself to this sect, and persuaded others to follow his example. It has been disputed, if Cicero was really attached to the new Academic system, or had merely resorted to it as being best adapted for furnishing him with oratorical arguments suited to all occasions. At first, its adoption was subsidiary to his other plans. But, towards the conclusion of his life, when he no longer maintained the place he was wont to hold in the Senate or the Forum, and when philosophy formed the occupation “with which existence was just tolerable, and without which it would have been intolerable(386),” he doubtless became convinced that the principles of the new Academy, illustrated as they had been by Carneades and Philo, formed the soundest system which had descended to mankind from the schools of Athens. The attachment, however, of Cicero to the Academic philosophy, was free from the exclusive spirit of sectarism, and hence it did not prevent his extracting from other systems what he found in them conformable to virtue and reason. His ethical principles, in particular, appear Eclectic, having been, in a great measure, formed from the opinions of the Stoics. Of most Greek sects he speaks with respect and esteem. For the Epicureans alone, he seems (notwithstanding his friendship for Atticus) to have entertained a decided aversion and contempt.