Here we have the key to the contradiction in Catholicism, that at the same time marriage is holy and celibacy is holy. This simply realises, as a practical contradiction, the dogmatic contradiction of the Virgin Mother. But this wondrous union of virginity and maternity, contradicting Nature and reason, but in the highest degree accordant with the feelings and imagination, is no product of Catholicism; it lies already in the twofold part which marriage plays in the Bible, especially in the view of the Apostle Paul. The supernatural conception of Christ is a fundamental doctrine of Christianity, a doctrine which expresses its inmost dogmatic essence, and which rests on the same foundation as all other miracles and articles of faith. As death, which the philosopher, the man of science, the free objective thinker in general, accepts as a natural necessity, and as indeed all the limits of nature, which are impediments to feeling, but to reason are rational laws, were repugnant to the Christians, and were set aside by them through the supposed agency of miraculous power; so, necessarily, they had an equal repugnance to the natural process of generation, and superseded it by miracle. The Miraculous Conception is not less welcome than the Resurrection to all believers; for it was the first step towards the purification of mankind, polluted by sin and Nature. Only because the God-man was not infected with original sin, could he, the pure one, purify mankind in the eyes of God, to whom the natural process of generation was an object of aversion, because he himself is nothing else but supranatural feeling.