人类最伟大的追求是知道必须做什么才能成为一个人。
The worst thing that can happen to a human being is to lose hope.
Over time, our emerging high-usage products will likely generate significant new revenue streams for Google as well as for our partners, just as search does today.
追求知识是一段永无止境的旅程，这正是它如此令人兴奋的原因。