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 *nounced a great oration in praise of wisdom, which malicious public opinion described as a speech in favor of the devil.

His next halt was at Prague, where he was received by the Emperor Rudolph II, the patron of Tycho Brahe and Kepler, and a student of philosophy and astronomy as well as of magic and astrology. The Italian philosopher addressed a small work to His Majesty, in which he repeats that his mission is to free the souls of men and to triumph over ignorance: he laments the hateful quarreling of different creeds, and proclaims charity and love to be the only true religion. As he did not meet with sympathy or support in Prague, he passed on to Helmstedt, where the Duke of Brunswick charged him with the education of his son. But here again he got at cross-purposes with the authorities, and this brought down on him a sentence of excommunication. He justified himself, and wrote a scathing attack on the pastor and rector of the University, who were his chief enemies. But it was not possible for him to remain, so he turned his steps toward Frankfort. This town was the center of the German book trade: fairs were held at Easter and Michaelmas, and people came from other countries to try and exchange books, which were still very rare. Bruno published several books here, and one might think he would have been left to pursue his studies without interference. But the burgomaster, or mayor, sternly refused to allow him to lodge with