我们都在寻找某样东西,但我们并不总是知道那是什么。有时是一个人,有时是一个地方,有时只是一种感觉。
在我的国家,要当上总统,得先待过监狱一回。
The first step is to establish that something is possible; then probability will occur.
"The key to successful verification is to start with a clear and precise specification of what the system is supposed to do."