Ecclesiastes 10:1-3

New Revised Standard Version Catholic Edition

10 Dead flies make the perfumer’s ointment give off a foul odor;
    so a little folly outweighs wisdom and honor.
² The heart of the wise inclines to the right,
    but the heart of a fool to the left.
³ Even when fools walk on the road, they lack sense,
    and show to everyone that they are fools.