YOU SAID:

Somethings are best left unsaid

INTO JAPANESE

何かは言わないでおくのが最善です

BACK INTO ENGLISH

It's best not to say anything

INTO JAPANESE

何も言わない方がいい

BACK INTO ENGLISH

You should say nothing

INTO JAPANESE

あなたは何も言うべきではありません

BACK INTO ENGLISH

You should say nothing