the power of custom; and learns that morality and religion are matters of latitude. This discovery tends to weaken authority, and to raise disquieting reflections, as in the case of one who, brought up as a Christian, comes to realize that, if he had been born on the Ganges or the Euphrates, he would have firmly believed in entirely different dogmas.
Of course these movements of intellectual freedom were, as in all ages, confined to the minority. Everywhere the masses were exceedingly superstitious. They believed that the safety of their cities depended on the good-will of their gods. If this superstitious spirit were alarmed, there was always a danger that philosophical speculations might be persecuted. And this occurred in Athens. About the middle of the fifth century Athens had not only become the most powerful State in Greece, but was also taking the highest place in literature and art. She was a full-fledged democracy. Political discussion was perfectly free. At this time she was guided by the statesman Pericles, who was personally a freethinker, or at least was in touch with all the subversive speculations of the day. He was especially intimate with the philosopher Anaxagoras who had come from Ionia to teach at Athens. In regard to the popular gods Anaxagoras was a thorough-
