expression
dead men tell no tales; the dead cannot speak in their own defense
Proverb meaning that the dead cannot reveal secrets or defend themselves, so it is easy to blame them or keep things hidden.
死人に口なしで、真実は闇の中だ。
Dead men tell no tales, so the truth remains in the dark.
彼は死人に口なしをいいことに、罪をなすりつけた。
Taking advantage of the fact that the dead cannot speak, he pinned the blame on them.
A Japanese proverb literally meaning 'a dead person has no mouth.' The exact origin is uncertain, but it reflects a universal idea found in many cultures.