一个人的力量,是他当前的手段,以获得未来明显的好处。
The power of a man, is his present means, to obtain some future apparent good.
The beauty of topological insulators lies in their robustness; their surface states are protected against disorder and imperfections.
机会并不会如影相随,所以当它到来的时候,你最好抓住。