人们说逝者总是在俯视着我们。但我们从不回望。
The dead are always looking down on us, they say. But we don't look back.
剑鞘保护剑的锋利，自己却满足於它自己的迟钝。
Sustainable fishing practices are not an option, but a necessity if we want to preserve marine biodiversity.
Persistence is key in mathematical research; many great results come from looking at the same problem from different angles over and over again.
写作是给自己一个活多次生命的机会。
成为作家就是成为生活的间谍。
解释：日月的光辉照亮了大地，可它们的内部仍然有黑点，人们谨慎地看待自己憎恶的人，而祸患常常发生在溺爱的人身上。