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;

世界上最好和最美丽的东西是看不见甚至摸不到的——它们必须用心去感受。

The best way to predict the future is to invent it.

与其抱怨黑暗，不如点亮一支蜡烛。