I remember well his discussion with Dr. Paul Deussen, the then head of Kiel University. He pointed out where Schopenhauer and Von Hartmann were wrong in founding their philosophy upon the blind will, the Unconscious, as contrasted with Universal Thought, which must precede all desiring or willing. Unfortunately that error continues today and vitiates a great deal of Western psychology by its using a wrong terminology.
I will close this by remarking that, although if we were enlightened we should see Deity in every manifestation, nevertheless it is a great boon when we can perceive it as patent in noble and holy men. One of such was the Swami Vivekananda.