Sirach 13:1-3

New Revised Standard Version Catholic Edition

13 Whoever touches pitch gets dirty,
    and whoever associates with a proud person becomes like him.
² Do not lift a weight too heavy for you,
    or associate with one mightier and richer than you.
How can the clay pot associate with the iron kettle?
    The pot will strike against it and be smashed.
³ A rich person does wrong, and even adds insults;
    a poor person suffers wrong, and must add apologies.