如果你在尝试改变世界，那么你正在做真正重要的事情。相信你每天都会在兴奋中起床。

电子产品的未来在于可持续性——设计时要考虑到最终结果。

He strolled like a man in the park without a care or a worry in the world. Like he had>

The past is never dead. It's not even past.

In mathematics, the art of proposing a question must be held of higher value than solving it.

没有人民的普遍知识，自由就无法得到保障。