'Beware of first- hand ideas!' exclaimed one of the most advanced of them. 'First-hand ideas do not really exist. They are but the physical impressions produced by live and fear, and on this gross foundation who could erect a philosophy? Let your ideas be second-hand, and if possible tenth-hand, for then they will be far removed from that disturbing element - direct observation. Do not learn anything about this subject of mine - the French Revolution. Learn instead what I think that Enicharmon thought Urizen thought Gutch thought Ho-Yung thought Chi-Bo-Sing thought Lafcadio Hearn thought Carlyle thought Mirabeau said about the French Revolution.'