Proverbs 19:2 & 20:3 (and 12:23)

"It is not good to have zeal without knowledge, nor to be hasty and miss the way." 19:2

"It is to a man's honor to avoid strife, but every fool is quick to quarrel." 20:3


"A prudent man keeps knowledge to himself, but the heart of fools blurts out folly." 12:23