Desiderius Erasmus was one of the leading activists and thinkers of the European Renaissance. His main activity was to write letters to the leading statesmen, humanists, printers, and theologians of the first three and a half decades of the sixteenth century. Erasmus was an indefatigable correspondent, controversialist, self-publicist, satirist, translator, commentator, editor, and provocateur of Renaissance culture. He was perhaps above all renowned and repudiated for his work on the Christian New Testament. He was not a systematic thinker, and he did not found a system or school of philosophy. In fact, his profound contempt for the scholastic philosophers of the Middle Ages and Renaissance puts him at odds with the institution of philosophy. Perhaps Erasmus’ most important role in the history of philosophy is to have challenged and expanded the disciplinary boundaries of the field. He did so by propounding his philosophy of Christ, which displays some affinities for prior traditions including Platonism and Epicureanism, but which depends primarily on the understanding that philosophy is not an exclusive university discipline, but rather a moral obligation incumbent upon all believers. In this context he founded an ethics of speech to guide himself and others to what he regarded as the true love of wisdom.