The 16th Century humanist scholar, Erasmus of Rotterdam (1469-1536). He produced the first critical edition of the Greek New Testament, which Luther used in his teaching and Bible translation. Later he was Luther's opponent in the controversy over the place of the human will in salvation. It was against Erasmus' "Free Will" that Luther wrote his masterpiece, "Bondage of the Will" in 1525. (From a painting by Hans Holbein the Younger).