培养造就冲淡清虚的品格，便是一生的学问；丢弃无端的烦脑，心境又是多么安静平和。

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.

真相如同太阳；你可以暂时遮蔽它，但它不会消失。

生命的伟大用处在于将其用于一些能够超越它的事物。