Leadership means making tough decisions today to ensure a better tomorrow.

在一个充满仇恨的世界里，我们仍然要敢于希望。在一个充满愤怒的世界里，我们仍然要敢于安慰。在一个充满绝望的世界里，我们仍然要敢于梦想。在一个充满怀疑的世界里，我们仍然要敢于相信。

森林不需要我们，但我们需要森林——我们的生存依赖于此。

If quantum mechanics hasn't profoundly shocked you, you haven't understood it yet.

It is not from the benevolence of the butcher， the brewer， or the baker that we expect our dinner， but from their regard to their own interest.

一门不影响你编程思维的语言不值得学习。