心灵是自己的地方，在那里可以把地狱变成天堂，把天堂变成地狱。
The mind is its own place, and in itself can make a heaven of hell, a hell of heaven.
I don't think about being a role model. I just try to be the best person I can be.
"The deeper the silence, the louder the words."
The end of history is not the end of events, but the end of the evolution of human political and social institutions.
Sustainability isn't an option—it's a necessity for the future of agriculture.
患者不是统计数据；他们是我们每天突破界限的原因。