Ecclesiastes 10:1-3

New International Reader's Version

10 Dead flies give perfume a bad smell.
    And a little foolishness can make a lot of wisdom useless.
² The hearts of wise people lead them on the right path.
    But the hearts of foolish people take them down the wrong path.
³ Foolish people don’t have any sense at all.
    They show everyone they are foolish.
    They do it even when they are walking along the road.