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Better, a man of calm (or noble) spirit is a man of understanding.

He that hath knowledge ...—This verse will better be rendered, He that restrains his words has knowledge, and one who is cool …

He that has knowledge spareth his words Or, "he that knows knowledge" F3 ; one that is very knowing, has a fun…

A man may show himself to be a wise man, by the good temper of his mind, and by the good control of his tongue. He is careful when he speaks, to sp…
Albert Barnes
AlbertBarnes