We are often in danger of doing injustice to the morality of the past, and it is important, even in order to understand the morality of the present, that we should be able to put ourselves in the place of those for whom birth control was immoral. To speak of birth control as having been immoral in the past is, indeed, to underestimate the case; it was not only immoral, it was unnatural, it was even irreligious, it was almost criminal. We must remember that throughout the Christian world the Divine Command, "Increase and Multiply," has seemed to echo down the ages from the beginning of the world. It was the authoritative command of a tribal God who was, according to the scriptural narrative, addressing a world inhabited by eight people. From such a point of view a world's population of several thousand persons would have seemed inconceivably vast, though to-day by even the most austere advocate of birth limitation it would be allowed with a smile. But the old religious command has become a tradition which has survived amid conditions totally unlike those under which it arose. In comparatively modern times it has been reinforced from unexpected quarters, on the one hand by all the forces that are opposed to democracy and on the other by all the forces of would-be patriotic militarism, both alike clamouring for plentiful and cheap men. Even science, under primitive conditions, was opposed to Birth Control. Creation was regarded as a direct process in which man's will had no part, and knowledge of nature was still too imperfect for the recognition of the fact that the whole course of the world's natural history has been an erection of barriers against wholesale and indiscriminate reproduction. Thus it came about that under the old dispensation, which is now for ever passing away, to have as many children as possible and to have them as often as possible--provided certain ritual prescriptions were fulfilled--seemed to be a religious, moral, natural, scientific, and patriotic duty.