这篇论文主要言阐述《野性的呼唤》中“适者生存”这个主题。一般来说，我们认为“适者生存”指的是只有强者才能有权利生存，所以这个词往往带着血腥和残忍的意味。但是，杰克.伦敦却赋予了它比较积极的意义。他认为这个词是指无论在什么情况下都能调节自己，使自己能生存下来或者能使自己在原来的基础上过得更好。现在越来越多的人都开始对这个“适者生存”持积极和理性的态度。这篇论文就是根据这个思想，对《野性的呼唤》中“适者生存”的含义进行解析，并希望将这个法则与现实社会联系起来。论文的简介部分对作者进行了简要介绍，对该作品的写作背景和故事梗概进行了梳理。论文的第一章论述了“适者生存”的历史和现实意义。第二章集中分析了这部小说，通过分析主人公巴克的亲身经历来阐释“适者生存”。文章中巴克一步步学会的生存法则其实也是作者想要告诉世人的生存理念。

This paper mainly analyzes the meaning of “survival of the fittest” through the experience of a dog called Buck in The Call of the Wild. As we know, the common meaning of this phrase is that only the strongest creatures have the right to survive, so this phrase usually is full of negative feeling. In other words, people could feel the cruelty when hearing it; however, the author of this story, Jack London gave this phrase some positive emotion, and he realized that only the people who tried their best to adapt to the environment can survive and live better life. Meanwhile, more and more people started to have the same feeling and they can treat this phrase in a rational manner. This paper also follows the right opinion towards this phrase. At the beginning of this paper, it briefly introduces the author’s life experience and the plots of this story. And then, it introduces the meaning of this phrase “survival of the fittest” both in the history and today. The major focus of this thesis is to analyze the meaning of this phrase in the story of The Call of the Wild. It depicts how Buck survives in a new and harsh area and what he has learned to live a comparably better life, which is the main point the author wants to tell us.