Wisdom of Ben Sira 21:12-14

New Catholic Bible

¹² The one who is not clever cannot be taught,
    but there is a cleverness that is a source of bitterness.
¹³ The knowledge of a wise man increases like a flood,
    and his counsel is like a life-giving spring.
¹⁴ The mind of a fool is like a broken jar;
    it cannot retain any knowledge.