我学得越多，就越意识到自己不懂的还有很多。
The more I learn, the more I realize how much I don’t know.
Art is love, love is art.
Critical comments by students should be taken in a friendly spirit， accumulation of material should not stifle the student’s independence.
"You can't be a writer unless you're a reader first."
The most important thing is to be able to think like an economist, to see the world through that lens.
Energy security is national security.