恩格斯

1.Engel's In-troduction is an effective weapon in carrying out criticisms of the decadent idealistic-metaphysical viewpoints in contemporary cosmogonical researeh.

恩格斯的《导言》是指导我们批判现代天体演化研究中僵死的唯心主义和形而上学的有力武器。

2.Chapter One reviews in a diachronical manner the development of the class theories, with an emphasis on the class theories of Karl Marx and Friedrich Engels.

第一章回顾了级理论的历史发展，重点析了马克思和恩格斯的级理论。