Abstract
This chapter focuses on four areas Aristotle considered when determining what something really was, namely, essence, predicates, judgments, and potentials. Understanding and employing these concepts in our own concept of monster will help us avoid our currently tainted love of Supernatural. According to Aristotle, there are essential and accidental aspects of being. In the simplest terms, the essential aspects are the things that could not change about something, while the accidental aspects are things that could change. Aristotle's third taxonomy of being is found in judgments of truth and falsity about a thing. These judgments can apply to questions of essence, accident, or any of the categories. Any question about the essential nature of monsters requires an answer that applies to all monsters.