Those who spare the rod hate their children, but those who love them are careful to discipline them.
NIV
He who spares his rod [of discipline] hates his son, but he who loves him disciplines diligently and punishes him early. [Prov. 19:18; 22:15; 23:13; 29:15, 17.]AMP
He that spareth his rod hateth his son: but he that loveth him chasteneth him betimes.
KJV
Walk with the wise and become wise, for a companion of fools suffers harm.
NIV
He who walks [as a companion] with wise men is wise, but he who associates with [self-confident] fools is [a fool himself and] shall smart for it. [Isa. 32:6.]AMP
He that walketh with wise men shall be wise: but a companion of fools shall be destroyed.
KJV