Solomon
Proverbs 13:16ESV·traditional attribution

Every prudent man acts with knowledge, but a fool flaunts his folly.

Matthew Henry Presbyterian @wholebiblehenry

Note, 1. It is wisdom to be cautious. Every prudent discreet man does all with knowledge (considering with himself and consulting with others), acts with deliberation and is upon the reserve, is careful not to meddle with that which he has not some knowledge of, not to launch out into business which he has not acquainted himself with, will not deal with those that he...

John Gill Reformed Baptist @doctorgill

Every prudent man dealeth with knowledge,.... In order to get more, and with men of knowledge for the same purpose; all he does is with knowledge and discretion; he does not meddle with things, nor has he to do with persons, he knows nothing of; he both acts and speaks with knowledge, cautiously, wisely, considering well time, place, and persons: and every wise and good...

Jamieson-Fausset-Brown Reformed @jfbcommentary

dealeth--acts with foresight. a fool . . . folly--for want of caution.