The most dangerous phrase in business is 'we've always done it this way.'

Never use a credit card for credit. The only kind of credit， or debt， that is acceptable is debt to acquire something whose exchange value is extremely likely to increase， like in a home. The exchange value of most things diminishes or vanishes the moment you purchase them. Don’t be in debt to losers.

计算机科学中的真正挑战不仅仅是建造更快的计算机，而是开发更聪明的算法。

她在狂野中是自由的，她是一个漫游者，一滴自由的水。她不属于任何男人，也不属于任何城市。

The beauty of a mathematical proof lies in its simplicity and inevitability.

The first fruit of this imagination—and the first lesson of the social science that embodies it—is the idea that the individual can understand his own experience and gauge his own fate only by locating himself within his period, that he can know his own chances in life only by becoming aware of those of all individuals in his circumstances.