经过无数代人的努力，你才达到了现在的水平。也许需要一点感激之情。如果你要坚持让世界按你的方式弯曲，你最好有自己的理由。
Generally speaking, envy, resentment, and self-pity are disastrous modes of thoughts.Self-pity gets fairly close to paranoia, and paranoia is one of the very hardest things to reverse.
Mathematics is not about numbers, equations, computations, or algorithms: it is about understanding.
权力总是危险的。它吸引最坏的人，腐蚀最好的人。
We are all shaped by forces beyond our control.