A kitchen knife cannot carve its own handle.
More Korean Proverbs:
The deeper the waters are, the more still they run.Korean
Woman was born three days earlier than the devil.
Korean
Put off for one day and ten days will pass by.
Korean
Remember, even monkeys fall out of trees.
Korean
Do not draw your sword to kill a fly.
Korean
Catch not at the shadow, and lose the substance.
Korean