我已经履行了我的职责。我证明了庞加莱猜想，我在数学上没有什么可做的了。

The only way to get better is to compete against the best.

The behavior of the whole cannot be predicted from the behavior of its parts taken separately.

The key to credible causal inference is not just the method, but how well the method fits the question at hand.

书籍的美妙之处在于它们可以带你去任何地方。

当听到雪轻轻飘落整个宇宙，轻轻飘落，如同他们最后的结局降临在所有生者和死者身上时，他的灵魂慢慢晕眩。