“It's better to keep your mouth shut and give the impression that you're stupid than to open it and remove all doubt.”
“It's better to keep your mouth shut and appear stupid than open it and remove all doubt”
“It is better to keep your mouth closed and appear a fool than to open it and remove all doubt.”
“Have you ever heard the phrase, it is better to keep your mouth closed and have people wonder if you are stupid than open it and remove all doubt? (Hakim al Harbi)”
“It is better to keep your mouth closed and let people think you are a fool than to open it and remove all doubt. ~Mark Twain~”
“Its better to be thought a fool, than to open one's mouth and remove all doubt.”