We are not separate observers of the universe, but active participants in its unfolding.

The most important things are hardest to tell,because words shrink their importance.It's not easy to let strangers care about the good things in your life.

当我们在没有危险的情况下征服时，我们的胜利就没有荣耀。

Mathematics is a way of thinking, not just a collection of facts.

石油开采的创新必须与环境管理齐头并进。