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An arrangement was effected, however, whereby that summons was cancelled, and Luther went to Augsburg in October 1518 to meet the papal legate, Cardinal Thomas Cajetan. The argument was long but nothing was resolved. The Leipzig Debate took place in June and July 1519 at Pleissenburg Castle in Leipzig, Germany. Its purpose was to discuss Martin Luther's teachings, and was initiated and conducted in the presence of George, Duke of Saxony, an opponent of Luther.