臣民对主权者的义务，只要主权者能保护他们，就持续存在，否则就不再存在。

Collaboration is key in modern research—no single mind can solve the grand challenges alone.

一个人的首要职责是为自己思考。

Sustainability isn't just good for the planet; it's good for business and essential for long-term success.

"Sometimes, you have to be apart from people you love, but that doesn't make you love them any less. Sometimes, it makes you love them more."

没有道德或不道德的书，只有写得好或写得差的书。