数学不仅仅是关于数字、方程、计算或算法：它是关于理解的。
Mathematics is not just about numbers, equations, computations, or algorithms: it is about understanding.
90% of everything is crap. If you think you don’t like opera， romance novels， TikTok， country music， vegan food， NFTs， keep trying to see if you can find the 10% that is not crap.
——〈在北京湖广会馆学界欢迎会的演说〉，1912年8月30日
Learning makes wise, but does not make happy.
The energy transition is not a question of if, but how and when.
最重要的是关注用户，其他一切都会随之而来。