While it is true that envy is the chief motive force leading to justice as between different classes, different nations, and different sexes, it is at the same time true that the kind of justice to be expected as a result of envy is likely to be the worst possible kind, namely that which consists rather in diminishing the pleasures of the fortunate than in increasing those of the unfortunate.
Source:The Conquest of Happiness, 1929, chap.6: Envy
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