你在玫瑰上所花的时间，让玫瑰变得重要。

If we don’t measure our impact, we’re just guessing at sustainability.

Is there such a thing as a cheerful pessimist? That's what I am.

Iteration is the key to innovation. You have to keep refining and improving your ideas until they work.

负责任的退役与负责任的发展同样重要。