Ben Sira 21:18

18 Like a house that has vanished, so is wisdom to a fool; and the knowledge of the ignorant is unexamined talk.

Ben Sira 21:18 In-Context

16 A fool's narration is like a burden on a journey, but delight will be found in the speech of the intelligent.
17 The utterance of a sensible man will be sought in the assembly, and they will ponder his words in their minds.
18 Like a house that has vanished, so is wisdom to a fool; and the knowledge of the ignorant is unexamined talk.
19 To a senseless man education is fetters on his feet, and like manacles on his right hand.
20 A fool raises his voice when he laughs, but a clever man smiles quietly.
Revised Standard Version of the Bible, copyright 1952 [2nd edition, 1971] by the Division of Christian Education of the National Council of the Churches of Christ in the United States of America. Used by permission. All rights reserved.