Plato taught four things: a theory of knowledge (epistemology), a theory of conduct (ethics), a theory of government (political science), and a theory of the universe (cosmology). Most of his writings consist of approximately two dozen dialogues. The one most read is The Republic. Plato’s ethics is not so much a moral philosophy as it is a discourse on virtue. Like all Greeks, Plato believed the greatest good of man is happiness. And the means by which this highest good is attained is through the