I've been waiting more than 30 years to say this: "Dad, I always told you I'd come back and get my degree." I want to thank Harvard for this timely honor. I'll be changing my job next year…and it will be nice to finally have a college degree on my resume.

Understanding the past is essential for designing policies that can shape a better future.

语法和语义之间的相互作用是形式语言研究的核心。

作家的职责是反抗谎言和压迫。

市场设计是一个持续的实验——今天有效的明天可能就需要调整。