If a man is crossing a river
And an empty boat collides with his own skiff,
Even though he be a bad-tempered man
He will not become very angry.
But if he sees a man in the boat,
He will shout to him to steer clear.
And if the shout is not heard he will shout
Again, and yet again, and begin cursing –
And all because there is somebody in that boat.
Yet if the boat were empty,
He would not be shouting, and he would not be angry.
– Chuang Tzu