But there is distinctly one point of close contact between science and morality, which we must not omit to point out. Physical science, particularly physiology, from its intimate acquaintance with the human organism, is admirably adapted for the function of a danger-signal, so to speak, to warn the ignorant and indifferent that a life undisciplined and ill-regulated cannot but end in irretrievable disaster. It thus most powerfully subserves the ends of private and individual morality, just as historical science, which, as Professor Huxley accurately noted, can in no wise be tested in a retort or a crucible, can point the moral when the lawless actions of public bodies or nations threaten the foundations upon which society rests. The physiologist can preach a sermon of appalling severity to the drunkard; he can describe internal and external horrors (as certain to ensue in the victim's case, as night follows day), compared with which the imaginings of a Dante are comparatively tame. He can likewise depict a deplorable future of disease and decay as reserved for the vicious. He can point to a veritable Gehenna strewn with the corpses of unnumbered victims. He can prove to demonstration, if we listen to him, that no organisation such as ours can resist the awful strain put upon it by the poison of alcohol, and the enervating results of an undisciplined existence. "Reform," he can tell us, "or go to perdition;" and most valuable his sermon will be. Would that men, so favourably endowed with this intimate knowledge of the intricacy of the workings of our bodily frame, so utilised their great powers in the service of ethics, pointing out to the reckless transgressor what a scourge nature has in store for him, what indescribable disasters he is preparing for himself by his audacity in venturing to break her holy laws. In the Church which is to be, "the Church of men to come," the scientist will fill this very _role_. As the best interpreter of nature, he will be most fitly chosen to discourse to us of nature's laws. The priests of humanity in days to be will not be consecrated by a magical transmission of imaginary powers, but by their ascertained capacity to open a door in heaven and earth and reveal to us the secret workings of the Soul of the World. We shall meet in united worship in the great cathedrals, but no more to repeat the dead formulae of a past which is gone, but to hear the living word of to-day, the last revelation the Supreme has made, be it through the mouth of poet, prophet, philosopher or scientist. Then, and only then, shall the Catholic or Universal Church be born, "coming down out of heaven from God," visibly embracing all humanity, because excluding none prepared to subscribe the aboriginal creed of the supremacy of ethic, the everlasting sovereignty of the moral law.