For the past 33 years， I have looked in the mirror every morning and asked myself: 'If today were the last day of my life， would I want to do what I am about to do today？' And whenever the answer has been 'No' for too many days in a row， I know I need to change something.

城市是一个活生生的有机体，不断演变并适应其居民的需求。

Every equation we write is a small step towards understanding the cosmos, but the journey is infinite.

人工智能的终极目标是服务人类社会，提升人们的生活水平。