最终，我们记住的不是敌人的话语，而是朋友的沉默。
In the end, we will remember not the words of our enemies, but the silence of our friends.
云计算不是一种产品，而是一种能力。
The right of a nation to kill a tyrant in case of necessity can never be doubted.
The beauty of mathematics is that it is one of the few areas of human endeavor where absolute truth can be known.
"The power of words lies in their ability to create worlds within worlds."
"A good book is an event in my life."
“追求科学不仅是一种职业，而且是一种生活方式。”