Proverbs 26:10-12

New International Version - UK

¹⁰ Like an archer who wounds at random
    is one who hires a fool or any passer-by.
¹¹ As a dog returns to its vomit,
    so fools repeat their folly.
¹² Do you see a person wise in their own eyes?
    There is more hope for a fool than for them.