There's a real correlation between a society that tells people that they can do anything, and the existence of low self-esteem. So that's another way in which something quite positive can have a nasty kickback. There is another reason why we might be feeling more anxious --about our careers, about our status in the world today, than ever before. And it's, again, linked to something nice. And that nice thing is called meritocracy.

能源的未来不是要在化石燃料和可再生能源之间做出选择，而是找到确保可靠性、可负担性和可持续性的正确平衡。

The process of scientific discovery is as important as the discovery itself, for it teaches us about the nature of inquiry and the limits of our understanding.

凡是大国之所以不攻打小国的,必定是由于这个小国粮食充足,城郭修筑坚固,上下和谐一心。