Johann Wolfgang von Goethe (1989). “Conversations of German Refugees ; Wilhelm Meister's Journeyman Years, Or, The Renunciants”, p.296, Princeton University Press
"Meditations of a Parish Priest" by Philibert Joseph Roux, translated by Isabel Florence Hapgood, New York: Thomas Y. Crowell & Co., Part 9, LIV, 1886.