Without knowledge as to what constitutes the calling and welfare of all men, all other arts and sciences become, as is really the case with us at present, only an idle and pernicious amusement. Mankind have been living long, and they have never been living without a science relative to the calling and welfare of men: it is true that the science of the welfare of men to a superficial observation appears to be different with Buddists, Brahmins, Hebrews, Christians, with the followers of Confucius and those of Laotse, though one need only reflect on these teachings in order to see their essential unity; where men have left the savage state behind them, we find this science; and now of a sudden it turns out that modern men have decided that this very science which has been till now the guide of all human information, is the obstacle in the way of everything. Men build houses; one architect makes one estimate, another makes a second, and so on. The estimates are a little different, but they are separately correct; and every one sees that, if each estimate is fulfilled, the house will be erected. Such architects are Confucius, Buddha, Moses, Christ. And now certain men come and assure us that the chief thing to come by is the absence of any estimate, and that men ought to build anyhow according to eyesight. And this "anyhow" these men call the most exact science, as the Pope terms himself the "most holy." Men deny every science, the most essential science of men's calling and welfare; and this denial of science they call science. Since men have existed, great intellects have always appeared, which, in the struggle with the demands of their reason and conscience, have put to themselves questions concerning the calling and welfare, not only of themselves individually, but of every man. What does that Power, which created me, require from me and from each man? And what am I to do in order to satisfy the craving ingrafted in me for a personal and a common welfare? They have asked themselves, I am a whole and a part of something unfathomable, infinite: what are to be my relations to other parts similar to me,--to men and to the whole? And from the voice of conscience and from reason, and from consideration on what men have said who lived before, and from contemporaries who have asked themselves the same questions, these great teachers have deduced teachings,--plain, clear, intelligible to all men, and always such as can be put into practice. Such men were of the first, second, third, and all magnitudes. The world is full of such men. All living men put to themselves the question, How am I to reconcile my own demands for personal life with conscience and reason, which demand the common good of all men? And out of this common travail new forms of life are evolved slowly, but unceasingly, satisfying more and more the demands of reason and conscience.