"The path to greatness is not always easy, but it is always worth it."
The beauty of topological insulators lies in their robustness; their surface states are protected against disorder and imperfections.
正确陈述的反面是错误陈述。但一个深刻真理的反面很可能是另一个深刻真理。
Fairy tales are more than true: not because they tell us that dragons exist, but because they tell us that dragons can be beaten.
Have you given any thought to your future?
当我死去时,都柏林将写在我的心上。
To be free is not merely to cast off one's chains, but to live in a way that respects and enhances the freedom of others.