Engels began his early historical studies in the course of his change from a man cherishing the belief of communism to a theorist with material historical conception and a fighter for communism.

• 摘要在恩格斯从一个具有共产主义信念的人，转变为具有唯物主义历史观的理论家和共产主义战士的过程中，恩格斯开始了他早期的史学研究。