所有模型都是错误的，但有些是有用的。

Don't interfere with anything in the Constitution. That must be maintained, for it is the only safeguard of our liberties. And not to Democrats alone do I make this appeal, but to all who love these great and true principles.

创新不仅仅是关于新产品；而是关于重新思考我们如何解决老问题。

The most exciting aspect of quantum information science is that it forces us to rethink some of our most basic assumptions about reality.

从长远来看，经济前景是乐观的，但从长远来看，我们都死了。