Rationalism never attained to the dignity of a clear and cogent elucidation until the publication of Roehr's _Letters on Rationalism_, and of Wegscheider's _Institutes_. It had reached the acme of its prosperity at the beginning of the century, yet the former work was not written until 1813, and the latter not until 1817. There was power in both these productions. The former was bold, popular, startling, and not without a show of learning. It was intended for the masses. The latter was a complement of the former; more heavy, but by virtue of its weight adapted to that class of people, everywhere abundant, who suspect either danger or puerility in every earnest sentence. The author held that it was the province of Protestantism to develop Christianity and Christian theology to a pure faith of reason. Issuing his work in the year of the Reformation jubilee, he dedicated it to the shades of Luther. But Roehr and Wegscheider, as far as their capacity to injure Christian faith was concerned, stood at the wrong term of the history of Rationalism. Had they written a half century earlier their works would have been much more injurious to the Christian Church. But the system they would now strengthen and propagate was beginning to decay, and it was beyond their power to save it from ruin. They built a house for an occupant who was too old to enjoy either the fascinating symmetry of its architecture or the gorgeous splendor of its furniture. It was at the time of which we speak that we first find frequent use of the terms _Rationalism_ and _Supernaturalism_. The more zealous friends of each school marshaled themselves for the final struggle. The conflict became hand to hand, and quick and direct blows were dealt by both combatants. One of the foremost among the champions of the old faith was Reinhard, who declared that there was an irrepressible difference between reason and revelation, Rationalism and Supernaturalism; that there was no possible point of compromise; that they had nothing in common; and that either the one or the other must exercise authority. Reinhard avowed himself in favor of the undivided supremacy of faith, and would have reason subordinate. The key-note of his active life and inspiring writings is found in his own language--words which, had he written nothing else, are sufficient to render him memorable. "While yet a boy," said he, "when I read the Bible I considered it the word of God to man, and never have I ceased to hold this view; so that now it is so holy to me and its utterances so decisive that a single sentence which would reproach its sanctity fills me with horror, just as an immoral sentiment would rouse my conviction of virtue."