Translations
Sound judgment is a life-giving spring to the one who possesses it — but whatever instruction fools offer is just more foolishness.
Good sense is a fountain of life to its owner, but the discipline of fools is folly itself.
Understanding is a wellspring of life unto him that hath it: but the instruction of fools is folly.
Understanding is a fountain of life to its possessor, but the discipline of fools is folly.