The pagan riot from which the church reacted so sharply, was not, however, the whole of the ancient civilization. I have already said that there was at the heart of this civilization at its best a great idea--the idea of proportionateness. The ancients were in short not merely naturalistic but humanistic, and the idea of proportion is just as fundamental in humanism as is humility in religion. Christianity, one scarcely need add, incorporated within itself, however disdainfully, many humanistic elements from Greek and Roman culture. Yet it is none the less true that in his horror at the pagan worldliness the Christian tended to fly into the opposite extreme of unworldliness, and in this clash between naturalism and supernaturalism the purely human virtues of mediation were thrust more or less into the background. Yet by its very defect on the humanistic side the doctrine of grace was perhaps all the better fitted for the administration of human nature in receivership. For thus to make man entirely distrustful of himself and entirely dependent on God, meant in practice to make him entirely dependent on the Church. Man became ignorant and fanatical in the early Christian centuries, but he also became humble, and in the situation then existing that was after all the main thing. The Church as receiver for human nature was thus enabled to rescue civilization from the wreck of pagan antiquity and the welter of the barbarian invasions. But by the very fact that the bases of life in this world gradually grew more secure man became less otherworldly. He gradually recovered some degree of confidence in himself. He gave increasing attention to that side of himself that the ascetic Christian had repressed. The achievements of the thirteenth century which mark perhaps the culmination of Christian civilization were very splendid not only from a religious but also from a humanistic point of view. But although the critical spirit was already beginning to awake, it did not at that time, as I have already said, actually break away from the tutelage of the Church.