The best economic research is often interdisciplinary.
"The past is always present, whispering in our ears, shaping our steps."
In mathematics, the simplest questions often lead to the most profound discoveries.
最好的电影是那些在你离开电影院后仍久久留在你心中的电影。
安全困境是国际政治的一个基本特征,因为国家增加自身安全的努力往往会降低其他国家的安全。
Technological progress must go hand in hand with ethics.