In a river mist, if another boat knocks against yours, you might yell at the other fellow to stay clear. But if you notice then, that it's an empty boat, adrift with nobody aboard, you stop yelling. When you discover that all the others are drifting boats, there's no one to yell at. And when you find out you are an empty boat, there's no one to yell.
ZhuangziA battering ram can knock down a city wall, but it cannot stop a hole. Different things have different uses.
ZhuangziThe wise man knows that it is better to sit on the banks of a remote mountain stream than to be emperor of the whole world.
Zhuangzi