Hans Kohn (1929), "Kohn’s letter of farewell to Zionism," as quoted in: Anthony G. Bing. Israeli Pacifist, The Life of Joseph Abileah, 1990.
Hans Kohn Quotes
Hans Kohn, The Idea of Nationalism, Macmillan, 1961 (p.16). Also quoted in Andrew Vincent, Modern Political Ideologies, Wiley, 2009 (p.318).