Lucius Annaeus Seneca: Treating mankind

A physician is not angry at the intemperance of a mad patient; nor does he take it ill to be railed at by a man in a fever. Just so should a wise man treat all mankind, as a physician does his patient; and looking upon them only as sick and extravagant. -Lucius Annaeus Seneca, philosopher (BCE 3-65 CE)