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It has always been a peculiarity of the human race that it keeps two sets of morals in stock-the private and the real, and the public and the artificial.

Mark Twain (2012). “Mark Twain at Your Fingertips: A Book of Quotations”, p.291, Courier Corporation
It has always been a peculiarity of the human race that it keeps two sets of morals in stock-the private and the real, and the public and the artificial.