最好的性能改进是从非工作状态到工作状态的转变。

过去是一个跟随我们的影子，永远存在，永远萦绕。

The merit of Marx is that he suddenly produces a qualitative change in the history of social thought. He interprets history, understands its dynamic, predicts the future, but in addition to predicting it, he expresses a revolutionary concept: the world must not only be interpreted, it must be transformed.

宇宙不是一个需要解决的谜题，而是一个需要经历的神秘。