Understanding Me not as God, and seeing Me as man, ye think Me arrogant in bearing witness of Myself. For any man who bears high testimony to himself, is thought proud and arrogant. But men are frail, and may either speak the truth, or lie: the Light cannot lie.
Reproduced in full. Translation: Oxford 1841 (Newman), public domain (Public domain).
Also cites: Tract. xxxvi. 3. in Joan.