Watch clouds floating in the sky. How calm, how carefree! They are never in conflict with the sky nor with winds. They know the art of let-go. But humans often feel they are helpless victims in a hostile and uncaring world. In addition, there is a deep discontentment caused by countless nagging desires. This compels people to build security walls around themselves and indulge in wish-making. The result: a closed and controlling mind. One feels suffocated and exhausted. Let-go is the key to break free from this cage.