在量子材料的领域中，拓扑的概念提供了一个强大的透镜，通过它我们可以理解和预测新的物质相。

一个爱国者必须时刻准备好在必要时捍卫国家免受政府的侵犯。

"We are all the heroes of our own stories."

I'm always looking for ways to improve.

资本主义是贪婪的合法化版本。

There are two freedoms - the false, where a man is free to do what he likes; the true, where he is free to do what he ought.