Spirit is not in the I but between I and Thou. It is not like the blood that circulates in you, but like the air in which you breathe.

Martin Buber, I and Thou, Translated by Ronald Gregor Smith, Scribner Classics, 2000 (1956), 49.

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Image: “Friday evening,” Isidor Kaufmann, Wikipedia Loves Art at the Jewish Museum (New York City), CC-by-SA 2.5, via Wikimedia Commons