tween 490 and 480 B. C. For it is true that in the first three of four centuries of the Christian era the western world seemed to hesitate between the religion of Mithra and that of Christ; and if the Persians had completed the conquest of Greece in the fifth century B. C., Mithra might have so strengthened his hold upon Europe that the scale would have been turned forever in his direction.
What was it that enabled the Greeks, in the crucial test, the ultimate contingency, to turn back the Persians and maintain their independence? History says that it was the result of the battles of Marathon and Salamis, in which the Greeks were triumphant over the Persians. This is true only in a limited sense. The battle of Marathon, in 490 B. C., did not save Greece, for the Persians came back again more powerful than ever. At Thermopylæ, Leonidas and his band died vainly, for the hosts of Xerxes overran all Greece north
