These demands are more ruthless to human nature than those opposed by Luther. Complete celibacy is easier than married celibacy. The needs of the soul are stronger than those of the senses. This ought not, however, to prevent the setting up of the strict demands if these were really conducive to a higher existence from the sexual point of view. But only one who disregards life’s reality (and the Christian is often such a one) can at the same time set up personal love as the ground of sexual morality and limit its rights within certain bounds of morality. Personal love, as now developed by civilisation, has become so complicated, comprehensive, and involved that _not only does it constitute in itself_ (independently of its mission to the race) _a great asset in life, but it also raises or lowers the value of all else_. It has acquired a new significance besides its original one: that of bearing the flame of life from generation to generation. No one calls him immoral who—disappointed in his love—abstains from continuing the race in his marriage; nor would the couple be called immoral who continue in a marriage made happy by love, although it has shown itself to be childless. But in both these cases, the parties concerned _follow their subjective feelings at the cost of the race and treat their love as an end in itself_. The right already granted to the individuals in these cases at the cost of the race will in future be extended more and more in proportion as the significance of love grows. On the other hand, the new morality will demand of love an ever greater _voluntary limitation of its rights, during the times that a new life claims it, as well as voluntary or compulsory renunciation of the right to produce new lives, under conditions which would render them of less value_. The marriage doctrine of neo-Protestantism, like that of Tolstoy, rests finally on the ascetic distrust of the sexual life. Neither doctrine supposes that the sensual side can be ennobled otherwise than by being placed exclusively at the service of the race. It is this point of view which is finally decisive in all Christian conceptions of morality. Christianity is sustained by the knowledge that the object of man’s life on earth is his development as an eternal being. Therefore none of his expressions of life can be an end in itself, but must serve a higher purpose than the earthly life and happiness of the individual—or even than that of the race.