죽어서도 무당 빌려 말하는데 살아서 말 못할까 -- The dead speak through shamans while the living stay silent.
This proverb reminds us that there is no reason we can't speak out minds. Just as the dead may use a shaman to speak to the living, cannot the living use their own mouths to speak to the living? (죽은 사람조차도 무당의 입을 빌려 못다 한 말을 넋두리하는데 산 사람이 못할 말이 있겠느냐는 말.)