Meaning of the word "to know all is to forgive all" in English

What does "to know all is to forgive all" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

to know all is to forgive all

US /tu noʊ ɔːl ɪz tu fərˈɡɪv ɔːl/
UK /tu nəʊ ɔːl ɪz tu fəˈɡɪv ɔːl/
"to know all is to forgive all" picture

Idiom

understanding the complete reasons behind someone's actions leads to a full pardon or sympathy for them

Example:
After hearing about his difficult childhood, I realized that to know all is to forgive all.
She stopped judging her neighbor's behavior, believing that to know all is to forgive all.