The future isn't written in the stars. There are no guarantees. So claim your adulthood. Be intentional. Get to work. Pick your family. Do the math. Make your own certainty. Don't be defined by what you didn't know or didn't do.

The spread of liberal democracy around the world is not inevitable, but it is the most likely outcome of the process of modernization.

学习的速度决定数字经济增长的速度。

数学中最重要的技能是提出正确问题的能力。