“We must not suppose that, because a man is a rational animal, he will, therefore, always act rationally; or, because he has such or such a predominant passion, that he will act invariably and consequentially in pursuit of it.”

— Philip Stanhope, 4th Earl of Chesterfield

19 December 1749
Letters to His Son on the Art of Becoming a Man of the World and a Gentleman (1774)
Context: We must not suppose that, because a man is a rational animal, he will, therefore, always act rationally; or, because he has such or such a predominant passion, that he will act invariably and consequentially in pursuit of it. No, we are complicated machines; and though we have one main spring that gives motion to the whole, we have an infinity of little wheels, which, in their turns, retard, precipitate, and sometime stop that motion.

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Philip Stanhope, 4th Earl of Chesterfield65

British statesman and man of letters 1694–1773

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