Sirach 13:16-18

New Revised Standard Version Catholic Edition

¹⁶ All living beings associate with their own kind,
    and people stick close to those like themselves.
¹⁷ What does a wolf have in common with a lamb?
    No more has a sinner with the devout.
¹⁸ What peace is there between a hyena and a dog?
    And what peace between the rich and the poor?