Plato's birth date is not exactly known. It is said that he was either born between 427-430 B.C. He was the son of wealthy and influential Athenian parents .Many of his relatives were involved in Athenian politics, although Plato himself was not. When Plato was a young man, he went to listen to Socrates, and learned a lot from Socrates about how to think, and what sort of questions to think about. When Socrates was killed in 399 BC, Plato was very upset (He was 30 years old when Socrates died) . Plato began to write down some of the conversations he had heard Socrates have. Practically everything we know about Socrates comes from what Plato wrote down. After a while, though, Plato began to write down his own ideas about philosophy instead of just writing down Socrates' ideas. One of his earlier works is the Republic, which describes what Plato thought would be a better form of government than the government of Athens. Plato thought that most people were pretty stupid, and so they should not be voting about what to do. Instead, the best people should be chosen to be the Guardians of the rest. (Remember Plato was from a rich aristocratic family so he probably considered himself among the best people!). Plato also thought a lot about the natural world and how it works. He thought that everything had a sort of ideal form, like the idea of a chair, and then an actual chair was a sort of poor imitation of the ideal chair that exists only in your mind. One of the ways Plato tried to explain his ideas with the famous metaphor of the cave. He said, suppose there is a cave, and inside the cave there are some men chained up to a wall, so that they can only see the back wall of the cave and nothing else. These men can't see anything outside of the cave, or even see each other clearly, but they can see shadows of what is going on outside the cave. Wouldn't these prisoners come to think that the shadows were real, and that...