"Dada manifesto" by Tristan Tzara, translated by Robert Motherwell, (1918); as quotes in "Dada Painters and Poets" by Robert Motherwell, New York, (pp. 78-81), 1951.
Walter Bagehot, Norman St. John-Stevas (1959). “Walter Bagehot: A Study of His Life and Thought, Together with a Selection from His Political Writings”, London : Eyre & Spottiswoode