Why worry? If you’ve done the very best you can, worry won’t make it any better.

If you want something you’ve never had, you must be willing to do something you’ve never done.

预测未来的最好方法就是自己去创造它。

The teacher should not teach as if he were pouring knowledge into an empty vessel, but rather as if he were lighting a fire.

现在不是去想缺少什么的时候，该想一想凭现有的东西你能做什么。