According to an odd-sounding utterance of Luther’s, every bishop who attended the Diet of Augsburg brought as many devils to oppose him “as a dog has fleas on its back on Midsummer Day.”[1059] Had the devil succeeded in his attempt there, “the next thing would have been that he would have committed murder,”[1060] but the angels dispatched by God had shielded him and the Evangel. When a fire devastated that part of Wittenberg which lay beyond the Castle gate, Luther was quite overwhelmed; watching the conflagration he assured the people that, “it was the devil’s work.” With his eyes full of tears he besought them to “quench it with the help of God and His holy angels.” A little later he exhorted the people in a sermon to withstand by prayer the work of the devil manifested in such fires. One of his pupils, Sebastian Fröschel, recalled the incident in a sermon on the feast of St. Michael. After the example and words of the “late Dr. Martin,” he declares, “the devil’s breath is so hot and poisonous that it can even infect the air and set it on fire, so that cities, land and people are poisoned and inflamed, for instance by the plague and other even more virulent diseases.... The devil is in and behind the flame which he fans to make it spread,” etc.[1061] This tallies with what Luther, when on a journey, wrote in later years to Catherine Bora of the fires which were occurring: “The devil himself has come forth possessed with new and worse demons; he causes fires and does damage that is dreadful to behold.” The writer instances the forest fires then raging (in July) in Thuringia and at Werda, and concludes: “Tell them to pray against the troublesome Satan who is seeking us out.”[1062] Madness, in Luther’s view, is in every case due to the devil; “what is outside reason is simply Satanic.”[1063] In a long letter to his friend Link, in 1528, dealing with a case raised, he proves that mad people must be regarded “as teased or possessed by the devil.” “Medical men who are unversed in theology know not how great is the strength and power of the devil”; but, against their natural explanations, we can set, first, Holy Scripture (Luke xiii. 16; Acts x. 38); secondly, experience, which proves that the devil causes deafness, dumbness, lameness and fever; thirdly, the fact that he can even “fill men’s minds with thoughts of adultery, murder, robbery and all other evil lusts”; all the more easily then was he able to confuse the mental powers.[1064] In the case of those possessed, the devil, according to Luther, either usurps the place of the soul, or lives side by side with it, ruling such unhappy people as the soul does the body.[1065]