On September 1, 2021 at 21:31, iform said...
"Better to remain silent and be thought a fool than to speak and to remove all doubt"
-Abraham Lincoln
Uh... Proverbs 17:28, two different translations:
Even a fool is thought wise if he keeps silent, and discerning if he holds his tongue.
Even a fool, when he holdeth his peace, is counted wise: and he that shutteth his lips is esteemed a man of understanding.
I think this predates Lincoln.