that the special domain of either is invaded by both. But differentiation finally takes place, and we all learn to distinguish between the things of Caesar and the things of God. This separation has far-reaching results. In asserting its independence, the State was driven to use argument as well as force. Thus learning, which in the confusion that succeeded the incursions of the Barbarians was cultivated almost exclusively by ecclesiastics, grew to be of interest and importance to laymen. They began to study, and the subjects which most engaged their thoughts were not religious, in the accepted sense of the word. The Protestant rebellion is but a phase of this revolution. It began with the introduction of the literature of Greece into Western Europe. The spirit of inquiry and mental curiosity was thereby awakened in wider circles; enthusiasm for the truth and beauty to which Greek genius has given the most perfect expression, was aroused; and interest in intellectual and artistic culture was called forth. New ideals were upheld to fresh and wondering minds. The contagion spread, and the thirst for knowledge was carried to ever-widening spheres. It thus came to pass that the cleric and the scholar ceased to be identical. The boundaries of knowledge were enlarged when the inductive method was applied to the study of nature, and it soon became impossible for one man to pretend to a mastery of all science. And so the principle of the division of labor was introduced into things of the intellect. Of old, the prophet or the philosopher was supposed to possess all wisdom; but now it had become plain that proficiency could be hoped for only by lifelong devotion to some special branch of knowledge. This led to other developments. The business of teaching, which had been almost exclusively in the hands of ecclesiastics, was now necessarily taken up by laymen also. As feudalism fell to decay, and the assertion of popular rights began to point to the advent of democracy, the movement in opposition to privilege logically led to the claim that learning should no longer be held to be the appanage of special classes, but that the gates of the temple of knowledge should be thrown open to the whole people. To make education universal, the most ready and the simplest means was to levy a school tax; and as this could be done only by the State, the State established systems of education and assumed the office of teacher. The result of all this has been that the school, which throughout Christendom is the creation of the church, has in most countries very largely passed into the control of the civil government.