Meaning of the word "every why has a wherefore" in English

What does "every why has a wherefore" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

every why has a wherefore

US /ˈev.ri waɪ hæz ə ˈwer.fɔːr/
UK /ˈev.ri waɪ hæz ə ˈweə.fɔː/
"every why has a wherefore" picture

Idiom

there is a reason for everything that happens

Example:
He may seem upset for no reason, but every why has a wherefore.
Don't worry about the sudden change; every why has a wherefore.