一个人只要能够生活就感到满足的话，他就会生活的很愉快。我们愈不知道忍受，我们愈感到痛苦。

The true measure of our industry's success will be how we balance economic growth with environmental stewardship.

I believe that we should all try to make a positive impact on the world.

The power of causal reasoning is that it allows us to predict the effects of actions we have never taken.

数学的本质不是把简单的事情复杂化，而是把复杂的事情简单化。