Milton's Satan and Goethe's Mephistopheles are literary performances; and, for what they prove, neither Milton nor Goethe need have believed in a Devil at all. Luther's Devil, on the other hand, was a being recognised by him as actually existing--as existing, one might say, with a vengeance. The strong conviction which Luther had on this point is a feature in his character. The narrative of his life abounds in anecdotes showing that the Devil with him was no chimera, no mere orthodoxy, no fiction. In every page of his writings we have the word _Teufel_, _Teufel_, repeated again and again. Occasionally there occurs an express dissertation upon the nature and functions of the Evil Spirit; and one of the longest chapters in his _Table Talk_ is that entitled "The Devil and his Works"--indicating that his conversation with his friends often turned on the subject of Satanic agency. _Teufel_ was actually the strongest signification he had; and, whenever he was excited to his highest emotional pitch, it came in to assist his utterance at the climax, and give him a correspondingly powerful expression. "This thing I will do," it was common for him to say, "in spite of all who may oppose me, be it duke, emperor, priest, bishop, cardinal, pope, or Devil." Man's heart, he says, is a "Stock, Stein, Eisen, Teufel, hart Herz," ("a stock, stone, iron, Devil, hard heart"). And it was not a mere vague conception he had of this being, such as theology might oblige. On the contrary, he had observed him as a man would his personal enemy, and in so doing had formed a great many conclusions respecting his powers and his character. In general, Luther's Devil may be defined as a personification, in the spirit of Scripture, of the resisting medium which Luther had to toil his way through--spiritual fears, passionate uprisings, fainting resolutions within himself; error, weakness, envy, in those around him; and, without, a whole world howling for his destruction. It is in effect as if Luther had said, "Scripture reveals to me the existence of a great accursed Being, whose function it is to produce evil. It is for me to ascertain the character of this Being, whom I, of all men, have to deal with. And how am I to do so except by observing him working? God knows I have not far to go in search of his manifestations." And thus Luther went on filling up the Scriptural proposition with his daily experience. He was constantly gaining a clearer conception of his great personal antagonist, constantly stumbling upon some more concealed trait in the Spirit's character. The Being himself was invisible; but men were walking in the midst of his manifestations. It was as if there were some Being whom we could not see, nor directly in the ordinary way have any intercourse with, but who every morning, before it was light, came and left at our doors some exquisite specimen of his workmanship. It would, of course, be difficult under such disadvantages to