A writer is someone who has taught his mind to misbehave.

International politics is a brutal and unforgiving arena, where states constantly strive to maximize their power and security.

学习数学的唯一方法就是做数学。

I don't like to be put in a box. I like to be free.

Sustainability isn't a cost—it's an investment in our future.

孔子说：“树立崇高理想、培养高尚品德、心怀仁慈友爱、陶冶高雅情操。”

"Do not go where the path may lead, go instead where there is no path and leave a trail."