任何挑战中最难的部分是迈出第一步。
The hardest part of any challenge is taking the first step.
I don’t do features, I do favors.
Every mathematical problem is a window into a deeper understanding of the world.
保持健康，不要失去勇气。
The greatest threat to our planet is the belief that someone else will save it.
——通过《军政府改组修正案审查报告》后，即向国会辞去大元帅职并发表通电，1918年5月4日
但没有这种自由，即随心所欲地支配我们所愿的一切。
"Writing is a way of speaking without being interrupted."
成为人就是永远不完整，永远在寻找。
The price of freedom is eternal vigilance.