What can be said at all can be said clearly， and what we cannot talk about we must pass over in silence.
一切能被说出的都能够清楚地被说出，而我们不能谈论的，必须保持沉默。
The writer must be a perpetual questioner, a doubter of all certainties.
心灵是一个操作符号表征的信息处理系统。
离散数学与计算机科学之间的相互作用一直是创新和发现的沃土。
I would like to fly in space.Absolutely.That would be cool.I used to just do personally risky things， but now I’ve got kids and responsibilities， so I can’t be my own test pilot.That wouldn’t be a good idea.But I definitely want to fly as soon as it’s a sensible thing to do.
技术应该服务于人，而不是人服务于技术。