Spirit in its human manifestation is a response of man to his Thou. Man speaks with many tongues, tongues of language, of art, of action; but the spirit is one, the response to the Thou which appears and addresses him out of the mystery.
Martin Buber, I and Thou, Translated by Ronald Gregor Smith, Scribner Classics, 2000 (1956), 48.
Image: Isidor Kaufmann, “A Yeshiva Boy,” (detail), Public domain, via Wikimedia Commons