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.
The past is a foreign country; they do things differently there.
I'm not here to be liked, I'm here to be remembered.
人心难测，表面友善的人，内心未必真诚。
We need to ensure that the Internet remains a platform for innovation and free expression.
About 99% of the time， the right time is right now.