Though the particular phenomena of this period, however, have not come to our knowledge, we see enough to prove that it was one of great prosperity for Sicily. The wealth, commerce, and public monuments of Agrigentum, especially appear to have even surpassed those of the Syracusans. Her trade with Carthage and the African coast was both extensive and profitable; for at this time neither the vine nor the olive were much cultivated in Libya, and the Carthaginians derived their wine and oil from the southern territory of Sicily,[181] particularly that of Agrigentum. The temples of the city, among which that of Olympic Zeus stood foremost, were on the grandest scale of magnificence, surpassing everything of the kind in Sicily. The population of the city, free as well as slave, was very great: the number of rich men keeping chariots and competing for the prize at the Olympic games was renowned, not less than the accumulation of works of art, statues and pictures,[182] with manifold insignia of ornament and luxury. All this is particularly brought to our notice because of the frightful catastrophe which desolated Agrigentum in 406 B.C. from the hands of the Carthaginians. It was in the interval which we are now describing that this prosperity was accumulated; doubtless not in Agrigentum alone, but more or less throughout all the Grecian cities of the island. [181] Diodor. xiii, 81. [182] Diodor. xiii. 82, 83, 90. Nor was it only in material prosperity that they were distinguished. At this time, the intellectual movement in some of the Italian and Sicilian towns was very considerable. The inconsiderable town of Elea in the gulf of Poseidonia nourished two of the greatest speculative philosophers in Greece, Parmenidês and Zeno. Empedoklês of Agrigentum was hardly less eminent in the same department, yet combining with it a political and practical efficiency. The popular character of the Sicilian governments stimulated the cultivation of rhetorical studies, wherein not only Empedoklês and Pôlus at Agrigentum, but Tisias and Korax at Syracuse, and still more, Gorgias at Leontini, acquired great reputation.[183] The constitution established at Agrigentum after the dispossession of the Theronian dynasty was at first not thoroughly democratical, the principal authority residing in a large Senate of One Thousand members. We are told even that an ambitious club of citizens were aiming at the reëstablishment of a despotism, when Empedoklês, availing himself of wealth and high position, took the lead in a popular opposition; so as not only to defeat this intrigue, but also to put down the Senate of One Thousand, and render the government completely democratical. His influence over the people was enhanced by the vein of mysticism, and pretence to miraculous or divine endowments, which accompanied his philosophical speculations, in a manner similar to Pythagoras.[184] The same combination of rhetoric with physical speculation appears