The purpose of mental activity is to guide action.

所有艺术家都有点自恋。

I’m convinced that about half of what separates the successful entrepreneurs from the non-successful ones is pure perseverance.

结交朋友应该找超过自己的人，和自己差不多或不如自己的人不如不交。

The world is full of signs and wonders that come, and go, and if you are lucky you might catch the tail of one as it flies past.

Energy independence is not just a goal; it's a necessity for national security.

我总是告诉我的学生，犯错是可以的，只要你从中学习。