“One thing you learn when you have lived as long as I have: people are not all good, and people are not all bad. We come in and out of the darkness and light up all our lives.” This quote, spoken by Neal Shusterman, is exemplified greatly in everyday life. Whether the difference between darkness and light is between good and evil or simply between private and public, it is inevitable to have two sides as a human being. Furthermore, in the works of fiction Dr. Jekyll and Mr. Hyde by Robert Louis Stevenson, Of Mice and Men by John Steinbeck, and The Book Thief written by Marcus Zusak, many characters follow this theory that as human beings there are two sides that exist in a person. However, many people would like to contradict this theory, saying that people are good-natured and only have one side. Realistically, though, this is false. In the world of literature, many texts describe duality between people and support Robert Stevenson's claim that duality exists in everyone. In many different types of books, duality plays an important role in who the characters are and how the story unfolds. A notable example is present in the character of Dr. Jekyll in Dr. Jekyll and Mr. Hyde. Doctor Jekyll, a kind and sociable man, continually transforms into Hyde to commit crimes and be evil from time to time. Toward the end of the book, Jekyll describes his obsession: “I began to be tortured with spasms and desires, as if Hyde were struggling for freedom” (Stevenson 82). Jekyll's desire and instinct to do evil things often crosses his mind and he can no longer hold it back. Hyde is his bad conscience that has always existed within him, but now he allows it to escape in horrible ways that bring trouble to others. . This is true for everyone who reads about Jekyll's story... middle of the paper... or about the desires and internal struggle to achieve it. His duality is always present in this scene. With all this, it can be said with certainty that many texts in the world of literature support what Stevenson has to say and that duality exists in everyone and is unable to avoid it. As Neal Shusterman explains, people constantly shift between their two inner sides. Each of us has a light and a dark side, but the difference between light and dark varies from person to person. Texts such as Of Mice and Men and The Book Thief strongly support this theory. No matter what people say about being good-natured as human beings, the desire to be evil or selfish will always exist. It's part of being human. The problem is finding ways to alleviate this urge to do things you will regret. Find ways to reduce the water added to the plant so it never grows to its full potential.