我不知道。有时候当我感觉快哭出来的时候，往往会演变成一种几乎想笑的冲动。那一定是我当时的真实感受，因为我笑了，几乎咯咯咯地笑了。
Great companies don't just sell products; they solve problems.
Mathematics is not about numbers, equations, computations, or algorithms: it is about understanding.
数学不是关于数字、方程、计算或算法的：它是关于理解的。
性能的关键在于优雅，而不是大量的特殊情况。
恨我，因为我渴望你伟大，而伟大，需要不惜一切代价。
我们都会完成。也许我们中没有一个人真正理解我们所经历的一切，或者觉得我们有足够的时间。
The only limit to our realization of tomorrow is our doubts of today.
Every truth goes through three stages: first, it is ridiculed; second, it is violently opposed; third, it is accepted as self-evident.
出自《魏源集·都中吟十三首》。洋人的情况、技术和版图，我都了解得像万里大的手掌中玩米和沙子一样。知己知彼是兵家的策略，一定要知道谁主掌着典属国的职位。
The walls of a garden should be high enough to keep the world out, but low enough to let the sky in.