Taciturnitas homini stulto pro sapientia est.
(Publilius Syrus, Sententia 627)

For the foolish person, silence stands in for wisdom.

(pron = tah-kih-TOOR-nih-tahs HOH-mih-nee STOOL-toh proh sah-pee-EN-tee-ah ehst)

Comment: The fool just keeps running his/her mouth. It’s non-stop chatter,
gossip, event at times intelligent sounding, parroting always what someone else
says, thinks, and writes. It is largely senseless chatter.

The one with a glimmer of awareness at some point stops and, remembering a
particular moment around a particular set of words says to him/herself: if I
had only kept my mouth shut!

The apprentice to wisdom keeps silence as a discipline.

The wise woman/man speaks out of that silence.