There are people who believe in their physical strength. So they go out and it's like: "Well, I'm strong. I'm physically strong." There are people who believe in their intellectual strength. "I'm okay, I am smart." There are people who believe in the wealth that they have accumulated, and they feel that that is their strength. They feel: "I am strong, I'm rich." But there is only one strength. And that is the strength that comes from the heart of each human being.