Based on his writings, Aristotle is considered a metaphysician. Aristotle wrote a large number of articles on logic such as the Categories, De interpretate and the preceding Analytics. Aristotle claimed to be the founder of logic based on his writings from these books. Aristotle also believed that happiness was the ultimate goal of human life. Aristotle defined moral virtue as “a disposition to behave in the right way and as a middle ground between the extremes of deficiency and excess, which are vices. We learn moral virtue primarily through habit and practice rather than through reasoning and instruction.” Aristotle also believed in many scientific phenomena. Phenomena such as the earth being the center of the universe. The list of Aristotle's beliefs and opinions could span over a million words, but we won't discuss them all.