Gibbon said of the ascetic movement that the Pagan world regarded with astonishment a society that perpetuated itself without marriage. Unfortunately this perpetuation was secured by the sacrifice of some of the dearest interests of the race. For, in general, one may say that idealistic teaching of any kind appeals most powerfully to those who are least in need of it. The world would at any time lose little, and might possibly gain much, were it possible to restrain a certain class from parentage. But there is no evidence that monasticism ever had its effect on that kind of people; the presumption is indeed in the contrary direction. The careless and brutal hear and are unaffected. The more thoughtful and desirable alone are influenced. And there can be little doubt that the Church in appealing to certain aspects of human nature dissuaded from parentage those who were most fitted for the task. There was a practical survival of the unfittest. Nothing is more striking, in fact, in the early history of Christianity than the comparative absence of home life and of the domestic ideals. Dean Milman remarked that in all the discussion concerning celibacy he could not recall a single instance where the social aspects appear to have occurred to the disputants. The Dean's remark applies to some extent to a much later period of Christian history than the one to which he refers. That much-admired evangelical classic, Bunyan's _Pilgrim's Progress_, for example, shows a curious obliviousness to the value of family and social life. But neglect of the socialising and refining influence of family life leads inevitably to a hardening of character and a brutalising of life in general. The ferocious nature of the theological disputes of the early Christian period never fail to arouse the comments of historians. But there was really nothing to soften or restrain them. Everything was dominated by the theological interest. And we owe it in no small measure to the vogue of the monk that the tolerance of Pagan times, with its widespread respect for truth-seeking, was replaced by the narrow intolerance of the medieval period, an intolerance which has never really been eradicated from any part of Christian Europe. In counting this as one of the consequences of the Christian preaching of celibacy, I am supported by no less an authority than the late Sir Francis Galton. In his epoch-marking work, _Hereditary Genius_, this writer says:--