On 10 November 1883, addressing his Göttingen colleagues and students in academic celebration of the quadricentennial of Luther's birth, Albrecht Ritschl (1822–89) delivered this remarkable verdict: “The genuine ideas of the Reformation were more concealed than disclosed in the theological works of Luther and Melanchthon.” The Wittenberg reformers themselves, not merely their epigones, had failed to systematize and safeguard those original epoch-making ideas by which they had effected their dramatic reform of religious life within the late medieval church.