Some common themes consist of love, friendship, greed, war, and revenge. The concept of coming of age, loss of innocence, and battle between good and evil are also very popular themes in stories.
However, it is important not to confuse theme and subject. The story’s subject expresses the main topic of the story in one word, whereas the theme is a whole sentence which expresses a specific opinion concerning the subject. The theme is a universal concept which everyone can understand and relate to. It allows the readers to identify with certain characters, situations, or obstacles. Finally, authors can use the theme to portray their own personal worldview and opinions, which are revealed through the main characters.