If you play a game where scrap pieces of glass are at stake, you will play skillfully. If your expensive belt buckle is at stake, you'll start to get clumsy. If it's your money that's at stake, you'll fumble. It's not that you've lost your skill. It's because you are so flustered by things happening outside that you've lost your calmness inside. Lose your stillness and you will fail in everything you do.

There was a man whose only son died of a sudden illness. He did not mourn for his son, nor was he sad about it. His friends were curious about his behavior, so they asked him, "Your only son is dead. You should be heartbroken. Why do you act as if nothing had happened?"The man replied, "Before my son came, I had no son. I was certainly not heartbroken back then. Now I have no son. Why should I be heartbroken now?