This document provides an overview of the concept of aristocracy. It begins with definitions of aristocracy as rule by the best or a small honored ruling class. It then discusses views of aristocracy from Aristotle and quotes related to it. It outlines the concept of aristocracy in Ancient Greece and Rome. It also discusses the Athenian aristocracy and presence of aristocracy in countries like Denmark, England, Spain, Nigeria and the United Kingdom. It concludes that aristocracy now broadly refers to a select few with authority in various domains like birth, wealth or intelligence.