If you have received a captious, fretful, bitter, unjust, or even spiteful and impertinent letter, the best rebuke you can possibly give the writer is absolutely to ignore it. To "talk back" with your pen puts the offender on her mettle. After she sent that letter, ten to one she would have been glad to call it back. She had a bad quarter of an hour thinking how you would receive it. But your answer comes at once, full of annoyance and pain. She begins to justify herself, and your peace of mind and dignity suffer.
Pay no apparent attention to the unjust or impertinent letter. Give its writer time to think it over, and, in all probability, she will eventually see her blunder and try to repair it. If she does not, you are still the gainer by ceasing to hold intercourse with her.
1 March 2017
Twitter Would Fall Silent
Katherine E. Conway (1853-1927), "When Silence Is Golden," A Lady and Her Letters (Boston: Pilot Publishing Company, 1895), pp. 51-52: