A hunter’s knife cannot carve its own handle.
More Korean Proverbs:
In the valley where there are no tigers the hare is king.Korean
A sheet of paper is lighter if two of you don't try to carry it.
Korean
The thief hates the moon.
Korean
Wise men philosophize as the fools live on.
Korean
Tall branches are apt to be broken.
Korean
If you starve for three days, there is no thought that does not invade your imagination.
Korean