创造力需要勇气。

阅读只为心灵提供知识的材料；是思考使我们所读的东西成为我们自己的。

永远不要停止提问——进步就从那里开始。

Government has no other end, but the preservation of property.

A failure is not always a mistake, it may simply be the best one can do under the circumstances. The real mistake is to stop trying.

我不害怕说出我的感受，因为这就是我。