아니 땐 굴뚝에 연기 날까?
"Where there's smoke, there's fire"
There's always a reason.
돌다리도 두드려 보고 건너라
"Look before you leap."
You have to be careful about everything, even if it looks secure.
공든 탑이 무너지랴
Hard work is never wasted.
A man´s labors will be crowned with success.
등잔 밑이 어둡다
People don`t know what is right under their nose.