Science, a field that involves various subjects including mathematics, biology, chemistry, etc., is one of the most influential aspects of human history. The Merriam-Webster Dictionary defines it as: “such knowledge or system of knowledge concerned with the physical world and its phenomena: Nature Science” (“Science”, Merriam-Webster Dictionary). What he studies is always linked to our nature, to ourselves. It is a field that requires sophisticated knowledge and skills, as well as long-term dedication. Therefore, every time a major breakthrough occurs, it has the potential to change the entire course of humanity. Take the steam engine as an example: It took James Watt decades to study the prototype of the original steam engine and then successfully modify it for commercial use. Such a major breakthrough in mechanical science became the key to the first industrial revolution and the turning point of a new chapter in the history of humanity. However, such scientific innovations must always take into consideration another aspect of humanity: the moral question: whether or not an invention is contrary to human nature and the principle of our physical world. This is a crucial concern because as long as an invention is anomalous to what we believe in, or functions in an opposite way, contradicting our nature, it can have disastrous consequences. In Mary Shelly's Frankenstein and Robert Louis Stevenson's Strange case of Dr Jekyll and Mr Hyde, both authors expressed their opinions on this concern. In their novels, they present two different stories about two scientists and their extraordinary creations, as well as the consequences of these inventions, both for themselves and for society. From my point of view, I argue that with the use of the first person point of view, a detailed description on ...... middle of paper ...... of them; vivid descriptions of the monsters demonstrate the terrible results such studies can produce; and secondary characters and social background make readers more convinced that such studies are unacceptable. The same message of these two novels must be remembered, even today. Only when the boundaries and limits of human nature are not broken can science benefit humanity. Works Cited Bright, Wilson, E. An Introduction to Scientific Research. New York: McGraw-Hill, 1952. 8. Print. Schwartz, Barry and Hugh Lacey. Behaviorism, science and human nature. 1st. New York: Norton, 1982. 7. “Science” Print. Def. 3b. Merriam Webster Online, Merriam Webster and Web. March 16, 2014. Struzziero, Maria Antonietta, ed. "Dr. Jekyll and Mr. Hyde: Themes." Dualism and dualities. No. Internet. March 16 2014. .