[12] See specially Vol. I., chapters 6, 7, and 8. One is sorely tempted to engage in what would be a rather lengthy aside on the mental freedom enjoyed by the people of ancient Greece, but considerations of cogency advise a shorter comment in this form. In the first place we have to note that neither the Greeks nor the Romans possessed anything in the shape of "sacred" books. That, as the history of Mohammedanism and Christianity shows, is one of the most disastrous things that can happen to any people. But apart from this there were several circumstances connected with the development of the Greek peoples that made for freedom of opinion. There was no uniform theology to commence with, and the configuration of the country, while enough to maintain local independence, was not enough to prevent a certain amount of intercourse. And it would certainly seem that no people were ever so devoid of intolerance as were the ancient Greeks. It is true that the history of Greece was not without its examples of intolerance, but these were comparatively few, and, as Professor Bury says, persecution was never organized. The gods were criticized in both speeches and plays. Theories of Materialism and Atheism were openly taught and were made the topic of public discussion. There was, indeed, a passion for the discussion of all sorts of subjects, and to discussion nothing is sacred. The best thought of Rome owed its impetus to Greece, and at a later date it was the recovered thought of Greece which gave the impetus to Mohammedan Spain in its cultivation of science and philosophy, and so led to the partial recovery of Europe from the disastrous control of the Christian Church. Nor need it be assumed that the work of Greece was due to the possession of a superior brain power. Of that there is not the slightest vestige of proof. It is simply that the ancient Greek lived in a freer mental atmosphere. The mind had less to hamper it in its operations; it had no organized and powerful Church that from the cradle to the grave pursued its work of preventing free criticism and the play of enlightened opinion. For several centuries the world has been seeking to recover some of its lost liberties with only a very moderate success. But if one thinks of what the Greeks were, and if one adds to what they had achieved a possible two thousand years of development, he will then have some notion of what the triumph of the Christian Church meant to the world.