我不是商人。我是设计师和工程师。
I'm not a businessman. I'm a designer and an engineer.
My favorite things in life don't cost any money. It's really clear that the most precious resource we all have is time.
科学不在于正确，而在于减少错误。
一件事情都不能做到有始有终，就不要去操持其他的事情;一物也不明白，就不要追求博闻广记。