计算机科学的挑战不仅在于构建更快的机器，更在于理解计算可能性的基本结构。

A mathematician is a device for turning coffee into theorems.

没有什么比一个人的想法更危险的了。

We must constantly challenge the status quo to drive meaningful progress.

表演的挑战是让观众忘记你在表演。

In computer science, we often find that the simplest solutions are the most elegant.

What I want to talk to you about today is the difference between gifts and choices. Cleverness is a gift， kindness is a choice. Gifts are easy -- they're given after all. Choices can be hard. You can seduce yourself with your gifts if you're not careful， and if you do， it'll probably be to the detriment of your choices.