The psychology of adultery has been falsified by conventional morals, which assume, in monogamous countries, that attraction to one person cannot co-exist with a serious affection for another. Everybody knows that this is untrue, yet everybody is liable, under the influence of jealousy, to fall back upon this untrue theory, and make mountains out of molehills.
Source: Bertrand Russell :Marriage and Morals, 1929
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