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.
Seneca the Younger (c. 4 BC-AD 65) Roman statesman, philosopher, playwright [Lucius Annaeus Seneca]
Moral Essays, “Of Anger [De ira]“
(Source)