The world is always right. In its judgments, it is always right. For it is not the world that judges, but we.

The greatest obstacle to being heroic is the doubt whether one may not be going to prove one's self a fool; the truest heroism is to resist the doubt; and the profoundest wisdom, to know when it ought to be resisted, and when to be obeyed.

你无法回到过去改变开头，但你可以从现在开始改变结局。