all is for the best in the best of all possible worlds

US /aːl ɪz fɔːr ðə ˈbest ɪn ðə ˌbest əv ɔːl ˈpɑs.ə.bəl ˌwɜːrldz/
"all is for the best in the best of all possible worlds" picture
1.

在所有可能的世界中,一切都是最好的