Proverbs 30:12-15

There are those who are clean in their own eyes but are not washed of their filth. There are those—how lofty are their eyes, how high their eyelids lift! There are those whose teeth are swords, whose fangs are knives, to devour the poor from off the earth, the needy from among mankind. The leech has two daughters: Give and Give. Three things are never satisfied; four never say, “Enough”