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Good breeding consists in having no particular mark of any profession, but a general elegance of manners.

Samuel Johnson (1807). “Dr. Johnson's Table-talk: Containing Aphorisms on Literature, Life, and Manners, with Anecdotes of Distinguished Persons, Selected and Arranged from Mr. Boswell's Life of Johnson”, p.105
Good breeding consists in having no particular mark of any profession, but a general elegance of manners.