"We are all in the gutter, but some of us are looking at the stars."
任何牺牲基本自由以换取短暂安全的人，最后既得不到安全也得不到自由。
The P versus NP problem is one of the most important unsolved problems in computer science.
The happiness of a married man depends on the people he has not married.
The biggest risk is not taking any risk. In a world that's changing really quickly, the only strategy that is guaranteed to fail is not taking risks.