"The immune system is the key to fighting cancer."

教育体系是以感官基础，以思考为过程，以自由为目的。

The responsibility of entrepreneurs is to lead their companies through cycles.

It is not unlikely, but that there may be yet invented several other helps for the eye, as much exceeding those already found, as those do the bare eye.

"You can't change the past, but you can change the meaning of the past."

"The world is a shadow, and the shadow is a lie."

A proof that P = NP would have profound implications for mathematics, cryptography, and algorithm design.