The frog forgets that he was once a tadpole.
More Korean Proverbs:
A fish wouldn't get into trouble if it kept its mouth shut.Korean
If a pedestrian sees a horse he will want to ride it.
Korean
Man's extremity, God's opportunity.
Korean
When you have three daughters, you sleep with the door open.
Korean
A nobleman's calf does not know how a butcher kills.
Korean
Even the best song becomes tiresome if heard too often.
Korean