The past is always tense, the future perfect.

We have a responsibility, every one of us. We may think we live a long way from the oceans, but we don't. What we actually do here, has a direct effect on the oceans—and what the oceans do then reflects back on us.

可归约性的概念对于理解不同计算问题之间的关系至关重要。

想要了解一个人，就听听他是如何评价他人的，这远比听信别人对他的评价来得彻底。

The act of reading is an act of rebellion against the limits of time and space.

投资就是低买高卖，相当简单。问题是要知道什么是低，什么是高。