Causality is the fabric of the universe, and probability is its language.

我不担心人们说什么。我知道我能做什么。

投资更清洁的煤炭技术是对能源未来的投资。

We are all ready to be savage in some cause. The difference between a good man and a bad one is the choice of the cause.

我们今天种下的每一粒种子都是对后代的承诺。