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The key is to set realistic customer expectations, and then not to just meet them, but to exceed them—preferably in unexpected and helpful ways.

You have to have confidence in your ability, and then be tough enough to follow through.

I don't believe in the concept of a 'comfort zone.'

I have never been able to write a happy play. I can't. I can write a funny play, but I can't write a happy play.

The hardest single part of building a software system is deciding precisely what to build.

數學是一種讓我們能夠描述無法描述的事物的語言。

Going out is not the goal, going in is the success.