Those who cannot remember the past arecondemned to repeatit.

Success comes from creating value for others and making a positive impact on the world.

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.

一个问题如果在计算机上可以快速解决，那么它属于P类问题；如果一个解可以快速验证，那么它属于NP类问题。

Hope is the last thing to die, and the first thing to betray you.

The best trades are the ones where you have the most conviction.

请求原谅比获得许可更容易。