写作是一种孤独的行为，但它以深刻的方式将我们与世界连接起来。

The balance between economic growth and environmental responsibility is the defining challenge of our time.

And I hope you will come back here to Harvard 30 years from now and reflect on what you have done with your talent and your energy. I hope you will judge yourselves not on your professional accomplishments alone, but also on how well you have addressed the world's deepest inequities…on how well you treated people a world away who have nothing in common with you but their humanity.

顾客的信任难获得易失去；永远不要视为理所当然。

The unexamined life is not worth living.

The goal of software architecture is to minimize the amount of knowledge you need to have in order to build a system.