From the particulars which have been related concerning Zeno, it will not be difficult to perceive what kind of influence his circumstances and character must have had upon his philosophical system. If his doctrines be diligently compared with the history of his life, it will appear, that having attended upon many eminent preceptors, and being intimately conversant with their opinions, he compiled, out of their various tenets, an heterogeneous system, on the credit of which he assumed to himself the title of the founder of a new sect.... The dialectic arts which Zeno learned in the school of Diodorus Chronus, he did not fail to apply to the support of his own system, and to communicate to bis followers. As to the moral doctrine of the Cynic sect, to which Zeno strictly adhered to the last, there can be no doubt that he transferred it almost without alloy, into his own school. In morals, the principal difference between the Cynics and the Stoics was, that the former disdained the cultivation of nature, the latter affected to rise above it. On the subject of physics, Zeno received his doctrine through the channel of the Platonic school, as will fully appear from a careful comparison of their respective systems. The Stoic philosophy, being in this manner of heterogeneous origin, it necessarily partook of the several systems of which it was composed. The idle quibbles, jejune reasonings, and imposing sophisms, which so justly exposed the schools of the dialectic philosophers to ridicule, found their way into the Porch, where much time was wasted, and much ingenuity thrown away, upon questions of no importance. Cicero censures the Stoics for encouraging in their schools a barren kind of disputation, and employing themselves in determining trifling questions, in which the disputants can have no interest, and which, at the close, leave them neither wiser nor better. And that this censure, is not, as some modern advocates for Stoicism have maintained, a mere calumny, but grounded upon fact, sufficiently appears from what is said by the ancients, particularly by Sextus Empiricus, concerning the logic of the Stoics. Seneca, who was himself a Stoic, candidly acknowledges this. It may, perhaps, be thought surprising that philosophers, who affected so much gravity and wisdom, should condescend to such trifling occupations. But it must be considered, that, at this time, a fondness for subtle disputations so generally prevailed in Greece, that excellence in the arts of reasoning and sophistry was a sure path to fame. The Stoics, with whom vanity was unquestionably a ruling passion, were ambitious for this kind of reputation. Hence it was that they engaged with so much vehemence in verbal contests, and that they largely contributed towards the confusion, instead of the improvement, of science, by substituting vague and ill-defined terms in the room of accurate conceptions. The moral part of the Stoical philosophy, in like manner, partook of the defects