The circumstances of the trial of Socrates illustrate both the tolerance and the intolerance which prevailed at Athens. His long immunity, the fact that he was at last indicted from political motives and perhaps personal also, the large minority in his favour, all show that thought was normally free, and that the mass of intolerance which existed was only fitfully invoked, and perhaps most often to serve other purposes. I may mention the case of the philosopher Aristotle, who some seventy years later left Athens because he was menaced by a prosecution for blasphemy, the charge being a pretext for attacking one who belonged to a certain political party. The persecution of opinion was never organized. It may seem curious that to find the persecuting spirit in Greece we have to turn to the philosophers. Plato, the most brilliant disciple of Socrates, constructed in his later years an ideal State. In this State he instituted [36] a religion considerably different from the current religion, and proposed to compel all the citizens to believe in his gods on pain of death or imprisonment. All freedom of discussion was excluded under the cast-iron system which he conceived. But the point of interest in his attitude is that he did not care much whether a religion was true, but only whether it was morally useful; he was prepared to promote morality by edifying fables; and he condemned the popular mythology not because it was false, but because it did not make for righteousness. The outcome of the large freedom permitted at Athens was a series of philosophies which had a common source in the conversations of Socrates. Plato, Aristotle, the Stoics, the Epicureans, the Sceptics—it may be maintained that the efforts of thought represented by these names have had a deeper influence on the progress of man than any other continuous intellectual movement, at least until the rise of modern science in a new epoch of liberty. The doctrines of the Epicureans, Stoics, and Sceptics all aimed at securing peace and guidance for the individual soul. They were widely propagated throughout the Greek world from the third century B.C., and we may say that from this time onward most [37] well-educated Greeks were more or less rationalists. The teaching of Epicurus had a distinct anti-religious tendency. He considered fear to be the fundamental motive of religion, and to free men’s minds from this fear was a principal object of his teaching. He was a Materialist, explaining the world by the atomic theory of Democritus and denying any divine government of the universe. [2] He did indeed hold the existence of gods, but, so far as men are concerned, his gods are as if they were not—living in some remote abode and enjoying a “sacred and everlasting calm.” They just served as an example of the realization of the ideal Epicurean life.