The word "politics" is derived from the Greek word 'polis' which means city-state. The term was coined by Aristotle, the great Greek philosopher, in the 4th century BCE. Aristotle used the term "politics" to describe the art or science of government and the activities associated with it. He used it to refer to the study of the state, the organization of the state, and the relationships between citizens and the state. Aristotle's concept of politics was based on the idea that the purpose of politics was to achieve the common good of the citizens of a state. He argued that politics was essential for the well-being of society and that it was a noble pursuit.