每一次挑战都是伪装的机遇。
The laws of physics produce complexity, and complexity leads to consciousness.
War is an ugly thing， but not the ugliest of things: the decayed and degraded state of moral and patriotic feeling which thinks that nothing is worth a war， is much worse.
Mathematics is not just about numbers, equations, computations, or algorithms: it is about understanding.
"Every saint has a past, and every sinner has a future."
