In proclaiming the equality of all men in this life, the Buddhists, as we have seen, came into direct collision with the orthodox creed of India, long carried out into practice in the institution of castes—a collision that was embittered by the abhorrence the Buddhists displayed for any distinction between the clergy and laity. To be a Brahmin a man must be born one, but a Buddhist priest might voluntarily come from any rank—from the very dregs of society. In the former system marriage was absolutely Contest between the Brahmans and Buddhists. essential to the ecclesiastical caste; in the latter it was not, for the priestly ranks could be recruited without it. And hence there followed a most important advantage, that celibacy and chastity might be extolled as the greatest of all the virtues. The experience of Europe, as well as of Asia, has shown how powerful is the control obtained by the hierarchy in that way. In India there was, therefore, no other course for the orthodox than to meet the danger with bloody persecutions, and in the end, the Buddhists, expelled from their native seats, were scattered throughout Eastern Asia. Persecution is the mother of proselytes. [68]