In ancient China the people wanted security against the barbaric hordes to the north, so they built the great wall. It was so high they believed no one could climb over it and so thick nothing could break it down. They settled back to enjoy their security. During the first hundred years of the wall's existence, China was invaded three times. Not once did the barbaric hordes break down the wall or climb over it. Each time they bribed a gatekeeper and then marched right through the gates. The Chinese were so busy relying on the walls of stone that they forgot to teach integrity to their children.