Ecclesiastes 10:13-15

New Revised Standard Version Catholic Edition

¹³ The words of their mouths begin in foolishness,
    and their talk ends in wicked madness;
¹⁴ yet fools talk on and on.
    No one knows what is to happen,
    and who can tell anyone what the future holds?
¹⁵ The toil of fools wears them out,
    for they do not even know the way to town.