Meaning of the word "a good mind possesses a kingdom" in English

What does "a good mind possesses a kingdom" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

a good mind possesses a kingdom

US /ə ɡʊd maɪnd pəˈzɛsɪz ə ˈkɪŋdəm/
UK /ə ɡʊd maɪnd pəˈzɛsɪz ə ˈkɪŋdəm/
"a good mind possesses a kingdom" picture

Idiom

a person with a healthy, educated, or virtuous mind has a wealth of inner resources that are more valuable than material riches

Example:
He lost all his money, but he remained happy, proving that a good mind possesses a kingdom.
Wealth can be taken away, but a good mind possesses a kingdom that no one can steal.