The circumstances of the world are continually changing, and the opinions of man change also; and as government is for the living, and not for the dead, it is the living only that has any right in it.

在生命中寻找意义的努力是人类的主要动力。

有自知之明的人，遇到问题了会反省自己，不会抱怨别人；能够掌握自己命运的人，只会积极进取，不会抱怨苍天。