Desiderius Erasmus Roterodamus, known as Erasmus or Erasmus of Rotterdam, was a Dutch Christian humanist who was the greatest scholar of the northern Renaissance. Originally trained as a Catholic priest, Erasmus was an important figure in classical scholarship who wrote in a pure Latin style. Among humanists he enjoyed the sobriquet "Prince of the Humanists", and has been called "the crowning glory of the Christian humanists". Using humanist techniques for working on texts, he prepared important new Latin and Greek editions of the New Testament, which raised questions that would be influential in the Protestant Reformation and Catholic Counter-Reformation. He also wrote On Free Will, In Praise of Folly, Handbook of a Christian Knight, On Civility in Children, Copia: Foundations of the Abundant Style, Julius Exclusus, and many other works.