Proverbs 17:19-21

New Catholic Bible

¹⁹ One who sows discord enjoys strife,
    and one who constructs a high threshold invites disaster.
²⁰ One whose heart is perverse will never prosper,
    and one whose tongue is evil will come to trouble.
²¹ The father of a fool endures endless sorrow
    and receives no joy from having begotten him.