Lucy Worsley is a British historian and TV presenter. Like most people in the public eye, she sometimes receives nasty mail—in her case, over a mild speech impediment that makes her R’s sound like W’s. One person wrote this: “Lucy, I’ll be blunt: Please try harder to correct your lazy speech or remove R’s from your scripts—I couldn’t sit through your TV series because it made me so annoyed. Regards, Darren.”

For some people, an insensitive comment like this might trigger an equally rude reply. But here’s how Lucy responded: “Oh Darren, I think you’ve used the anonymity of the internet…