We cannot always build the future for our youth, but we can build our youth for the future.

The most damaging phrase in the language is: 'We've always done it this way.'

如果一个国家期望在国民无知的情况下却拥有自由，那么这种期望无论在历史上，还是未来都绝不会实现。如果我们打算抵御无知和捍卫自由，每位美国人都有责任了解一件公共事务的来龙去脉。

"The best performances are those that come from a place of deep vulnerability and honesty."

科学的真正回报是理解新事物的兴奋感。

幸福是最近两年里听到最多的词语。幸福不单只是和个人经历和价值相关，它也同样关系到我们的环境。