Wisdom of Ben Sira 22:9-11

New Catholic Bible

⁹ Teaching a fool is like gluing together pieces of pottery,
    or like rousing a sleeper from deep slumber.
¹⁰ You might as well talk to someone who is sound asleep as to a fool,
    for when you have finished, the fool will say, “What was that?”
¹¹ Weep for the dead man, for he has taken leave of the light;
    weep for the fool, for he has taken leave of his wits.
Weep fewer tears for the dead man, for he is at rest,
    but the life of a fool is sadder than death.