与时俱进的典范——马克思、恩格斯对马克思主义的发展

An Example on Advancing with Time: Marx and Engels' Development on Marxism

马克思主义是彻底的唯物主义，与时俱进是马克思主义的重要特征。马克思主义的产生、发展不仅来自于对旧世界的批判，而且也来自于对自身理论的扬弃、修正和补充。

By its nature, Marxism is completely materialistic, while advancing with time is one of its important attributes. The birth and development of Marxism is not only a result of the denial of the old world, but is a process of self-denial, modification and complement.