A problem is in P if it can be solved quickly by a computer, and in NP if a solution can be verified quickly.

处理一个不自由的世界的唯一方法是变得如此绝对自由，以至于你的存在本身就是一种反叛。

晏子春秋

"Freedom is nothing else but a chance to be better."

统一自然界基本力的追求是现代物理学中最大的挑战之一。

I don't need a reason to be confident.

Success is falling nine times and getting up ten.

企业家要有社会责任感。