In a Society in which there is no law, and in theory no compulsion, the only arbiter of behaviour is public opinion. But public opinion, because of the tremendous urge to conformity in gregarious animals, is less tolerant than any system of law.
Source:Politics vs. Literature: An Examination of Gulliver's Travels (September 1946); The Collected Essays, Journalism and Letters of George Orwell (1968), Volume IV, Page 215