从前有只鸟停留在鲁国都城郊外，鲁君很喜爱它，用牛羊猪三牲俱备的规格来款待它，还奏起韶乐，要使它快乐，鸟儿却黯然神伤，头晕目眩，不敢吃东西，这是用别人供养自己的方法来养鸟。真正养鸟的方法，应该是让它栖息在深林，飞翔在江湖之上，让它吃鳅鱼，自由自在地漫步在山野，那么一块平地就够了。

If you don’t try to uncover what is unseen and understand its nature, you will be ill prepared to lead.

The test of a first-rate intelligence is the ability to hold two opposed ideas in the mind at the same time, and still retain the ability to function.