Meaning of the word "a donkey that carries a lot of books is not necessarily learned" in English

What does "a donkey that carries a lot of books is not necessarily learned" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

a donkey that carries a lot of books is not necessarily learned

US /ə ˈdɑːŋ.ki ðæt ˈkær.iz ə lɑːt əv bʊks ɪz nɑːt ˌnes.əˈser.əl.i lɝːnd/
UK /ə ˈdɒŋ.ki ðæt ˈkær.iz ə lɒt əv bʊks ɪz nɒt ˌnes.əˈser.əl.i lɜːnd/
"a donkey that carries a lot of books is not necessarily learned" picture

Idiom

possessing knowledge or resources does not mean one understands or can apply them; having books doesn't make one wise

Example:
He has a massive library but never reads; truly, a donkey that carries a lot of books is not necessarily learned.
Don't be impressed by his collection of encyclopedias; a donkey that carries a lot of books is not necessarily learned.