Ecclesiastes 10:1-3

New Catholic Bible

¹ Just as dead flies give perfumes a foul smell,
    so a little folly can outweigh wisdom and honor.
² The heart of a wise man inclines to the right;
    the heart of a fool inclines to the left.
³ Even when a fool walks down the road,
    he lacks sense
    and indicates to everyone how stupid he is.