Although we know that the earth is not the centre of the universe, that it is but a minor satellite, a globule lost in space, our deepest thought still finds that the end of nature is the production of rational beings, of man; for the final reason for which all things exist is that the infinite good may be communicated; and since the highest good is truth and holiness, it can be communicated only to beings who think and love. Hence all things are man's, and he exists that he may make himself like God; in other words, that he may educate himself; for the end of education is to fit him for completeness of life, to train all his faculties, to call all his endowments into play, to make him symmetrical and whole in body and soul. This, of course, is the ideal, and consequently the unattainable; but in the light of ideals alone do we see rightly and judge truly; and to take a lower view of the aim and end of education is to take a partial view. To hold that God is, and that man truly lives only in so far as he is made partaker of the divine life, is, by implication, to hold that his education should be primarily and essentially religious. Our opinions and beliefs, however, are never the result of purely rational processes, and hence a mere syllogism has small persuasive force, or even no influence at all, upon our way of looking at things, or the motives which determine action. As it is useless to argue against the nature of things, so we generally plead in vain when our world-view is other than that of those whom we seek to convince; for those who observe from different points either do not see the same objects or do not see them in the same light. Life is complex, and the springs of thought and action are controlled in mysterious ways by forces and impulses which we neither clearly understand nor accurately measure. What is called the spirit of the age, the spirit which, as the Poet says, sits at the roaring loom of time and weaves for God the garment whereby He is made visible to us, exercises a potent influence upon all our thinking and doing. We live in an era of progress, and progress means differentiation of structure and specialization of function. The more perfect the organism, the more are its separate functions assigned to separate parts. As social aggregates develop, a similar differentiation takes place. Offices which were in the hands of one are distributed among several. Agencies are evolved by which processes of production, distribution, and exchange are carried on. Trades and professions are called into existence. As enlightenment and skill increase, men become more difficult to please. They demand the best work, and the best work can be done, as a rule, only by specialists. Specialization thus becomes a characteristic of civilization. The patriarch is both king and priest. In Greece and Rome, religion is a function of the State. In the Middle Age, the Church and the State coalesce, and form such an intimate union