This debate has been one of the intriguing factors within the scientific and cultural fields in the twentieth century. This is in the way that it plays an essential role in determining the way that human beings exhibit their behaviors in varied ways. There are a number of changes that are experienced within the environment, the society, the family values, political influences, education as well as moral values which can be classified among other external factors (Posner 39). In this, it is argued that the characteristics and behavior of an individual are determined by two contrasting factors. An individual is either influenced by nature, which is expressed in terms of genetics or by nurture which is dependent on the environment within which they grow. One of the proper examples of nurture is the race of the individual, which influenced the subsequent way with which they behave or relate with others (Carme amp. Coy 107). However, other literary analysts usually have either supportive or differing opinions about the same topic. For instance, there are some of them who argue that both the external and internal factors have to be combined to bring out the different behaviors in individuals (Posner 39). This paper will analyze the side of nature versus nurture viewpoint as is taken by Mark Twain in his The Tragedy of Puddnhead Wilson book. Mark Twain tells the story of twins in the book The Tragedy of Puddnhead Wilson. The main aim is to show whether boys who are switched at an early stage in their lives are able to behave in the same manner. He develops Tom who is born a slave but raised as a master and Chambers who is a born master but raised as a slave. It is also through the use of doubles in the book by using Tom and Chambers that he is able to bring about the aspect of identity. However, in this case, he drives his point home by bringing about the case of mistaken identity through which he makes attempts toreveal the consequences of the actions that are related to this kind of mistake.