Answer:
Plato and Aristotle had a major impact on the development of philosophical thought and political theories. Plato's Republic laid the foundation for democracy and his writings on the ideal state, justice and the role of the individual in society laid the groundwork for modern political thought. Aristotle proposed a form of teleological ethics, in which actions or choices could be evaluated on whether they lead to a desired end, and his works on rhetoric, logic and metaphysics provided insight into human understanding. Together, these two ancient philosophers helped shape the course of Western civilization.