Every individual has a place to fill in the world and is important in some respect whether he chooses to be so or not.

The only real prison is fear, and the only real freedom is freedom from fear.

And that's a lot of the reason why we care so much about our careers and indeed start caring so much about material goods. You know, we're often told that we live in very materialistic times, that we're all greedy people. I don't think we are particularly materialistic. I think we live in a society which has simply pegged certain emotional rewards to the acquisition of material goods. It's not the material goods we want;

Every decision we make today will echo in the future of our oceans.

爱是生命中最重要的事情。

Innovation in plastics isn't optional—it's our responsibility to the planet.

学习数学的唯一方法就是做数学。