"The value of a thought lies in its functional efficacy."

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.

The key to performance is elegance, not battalions of special cases.

别哭了，我很抱歉，你一定要明白，我很抱歉骗你这么多，但生活就是如此。