Meaning of the word "send a fool to market and a fool he will return" in English

What does "send a fool to market and a fool he will return" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

send a fool to market and a fool he will return

US /sɛnd ə ful tu ˈmɑrkət ænd ə ful hi wɪl rɪˈtɜrn/
UK /sɛnd ə fuːl tu ˈmɑːkɪt ænd ə fuːl hiː wɪl rɪˈtɜːn/
"send a fool to market and a fool he will return" picture

Idiom

a proverb meaning that travel or experience does not change a person's inherent lack of intelligence or common sense

Example:
He went to the best university but still makes terrible decisions; send a fool to market and a fool he will return.
I thought the trip would broaden his mind, but send a fool to market and a fool he will return.