The truth is not for all men, but only for those who seek it.
Computer programming is an art, because it applies accumulated knowledge to the world, because it requires skill and ingenuity, and especially because it produces objects of beauty.
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。
I’ve always thought that the schoolboy who’s a bit of a troublemaker is the one who’s going to come out and do something really interesting.
The challenge in computer science is not just to solve problems, but to find the right problems to solve.