Proverbs 17:27

27 The one who has knowledge uses words with restraint, and whoever has understanding is even-tempered.

Read Proverbs 17:27 Using Other Translations

He that hath knowledge spareth his words: and a man of understanding is of an excellent spirit.
Whoever restrains his words has knowledge, and he who has a cool spirit is a man of understanding.
A truly wise person uses few words; a person with understanding is even-tempered.