"Vanity is the poison of agreeableness; yet as poison, when artfully and properly applied, has a salutary effect in medicine, so has vanity in the commerce and society of the world."

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We may say of agreeableness, as distinct from beauty, that it consists in a symmetry of which we know not the rules, and a secret conformity of the features to each other, as also to the air and complexion of the person.

— Francois de La Rochefoucauld