The fatality of the Athenian development is seen not only in the direct hostility of the people to rational thought, but in their loss of their hold even on their public polity. For lack of political judgment, moved always by the passions which their literary culture cherished, they so mishandled their affairs in the long and demoralizing Peloponnesian war that they were at one time cowed by their own aristocracy, on essentially absurd pretexts, into abandoning the democratic constitution. Its restoration was followed at the final crisis by another tyranny, also short-lived, but abnormally bloody and iniquitous; and though the people at its overthrow showed a moderation in remarkable contrast to the cruelty and rapacity of the aristocrats, the effect of such extreme vicissitude was to increase the total disposition towards civic violence and coercion. And while the people menaced freethinking in religion, the aristocracies opposed freethinking in politics. Thus under the Thirty Tyrants all intellectual teaching was forbidden; and Kritias, himself accused of having helped Alkibiades to parody the mysteries, sharply interdicted the political rationalism of Sokrates, [619] who according to tradition had been one of his own instructors. It was a result of the general movement of mind throughout the rest of the Hellenic world that freethinkers of culture were still numerous. Archelaos of Miletos, the most important disciple of Anaxagoras; according to a late tradition, the master of Sokrates; and the first systematic teacher of Ionic physical science in Athens, taught the infinity of the universe, grasped the explanation of the nature of sound, and set forth on purely rationalistic lines the social origin and basis of morals, thus giving Sokrates his practical lead. [620] Another disciple of Anaxagoras, Metrodoros of Lampsakos (not to be confounded with Metrodoros of Chios, and the other Metrodoros of Lampsakos who was the friend of Epicurus, both also freethinkers), carried out zealously his master's teaching as to the deities and heroes of Homer, resolving them into mere elemental combinations and physical agencies, and making Zeus stand for mind, and Athenê for art. [621] And in the belles lettres of Athens itself, in the dramas of Euripides [480-406 B.C.], who is said to have been the ardent disciple of Anaxagoras, [622] to have studied Herakleitos, [623] and to have been the friend of Sokrates and Protagoras, there emerge traces enough of a rationalism not to be reconciled with the old belief in the Gods. If Euripides has nowhere ventured on such a terrific paradox as the Prometheus, he has in a score of passages revealed a stress of skepticism which, inasmuch as he too uses all the forms of Hellenic faith, [624] deepens our doubt as to the beliefs of Æschylus. Euripides even gave overt proof of his unbelief, beginning his Melanippe with the line: "Zeus, whoever Zeus be, for I know not,