Since the invention of the mirror, everyone knows what he or she looks like and does not find it helpful or enjoyable to have oddities or deficiencies — according to someone else’s standards and tastes — pointed out. And every adult assumes the right of making his or her own decisions about eating, drinking, mating and reproducing, and finds being monitored and instructed — again according to someone else’s preferences — distasteful.

Judith Martin (b. 1938) American author, journalist, etiquette expert [a.k.a. Miss Manners]

“Miss Manners,” syndicated column (1986-01-19)
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