A door was locked by a firm big lock. An iron stick
was unable to open it up even with all his efforts.

Instead, the key, with his tiny body, went inside the
lock hole with. Just a slight turning that made the
lock open up.

The iron stick asked queerly, " Why can't I open the
lock up with all my efforts but you do that easily?"

The key replied, " it's because I understand his heart
most."

Everyone's heart just like a locked door. No matter
how thick is the iron stick, you cannot open it up.
You can turn into a delicate key only with your concern,
to enter the heart of others and to understand them.

- Only those who wear the shoes will know what's wrong
with the shoes.