Source: The Ape that Thought It Was a Peacock: Does Evolutionary Psychology Exaggerate Human Sex Differences? (2013), p. 144
“Whatever misanthropists may say, ingrates and the perverse are exceptions in the human species.”
Napoleon : In His Own Words (1916)
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Napoleon I of France 259
French general, First Consul and later Emperor of the French 1769–1821Related quotes

Source: Better-World Philosophy: A Sociological Synthesis (1899), The Social Ideal, p. 144

Ce n'est pas un grand malheur d'obliger des ingrats, mais c'en est un insupportable d'être obligé à un malhonnête homme.
Variant translation: It is not a great misfortune to be of service to ingrates, but it is an intolerable one to be obliged to a dishonest man.
Maxim 317.
Reflections; or Sentences and Moral Maxims (1665–1678)

To Jerusalem and Back: A Personal Account (1976), p. 38
General sources

“There seems to be some perverse human characteristic that likes to make easy things difficult.”

“Every time that I fill a high office, I create a hundred discontented men and an ingrate.”
Toutes les fois que je donne une place vacante, je fais cent mécontents et un ingrat.
Quoted in Voltaire, Le Siècle de Louis XIV (1751), ch.26