处于逆境，思想要开拓放达，奋发图强；处于顺境，思想要警觉收敛，约束自身。

"In computer science, we are always trying to find the balance between expressiveness and tractability."

The greatest art is to make the invisible visible.

Leadership in mining means making tough decisions for long-term benefits.

经济学的研究最终是对人类行为及其后果的研究。