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Thank you very much for your letters. They are always too short for me, but of course I understand! It is as though the prison gates were opened for a moment, and I could share a little of your life outside. Joy is a thing that we want very badly in this solemn building, where one never hears a laugh—it seems to get even the warders down—and we exhaust all our reserves of it from within and without.
Dietrich Bonhoeffer: Letters and Papers from Prison, edited by Eberhard Bethge, The Macmillan Company, New York, 1971, p. 49.