The beauty of mathematics lies in its ability to describe the universe in the most elegant way possible.

The beauty of topological insulators lies in their robustness; their surface states are protected by symmetry and topology, making them immune to certain types of disorder.

如果你不犯错，说明你解决的问题还不够难。

现在，我不打算站在这里告诉你们，失败是有趣的。那段日子是我生命中的黑暗岁月，我不知道它是否代表童话故事里需要历经的磨难，更不知道自己还要在黑暗中走多久。很长一段时间里，前面留给我的只是希望，而不是现实。