Plato was a student of Socrates, and is notorious for his work, which features Socrates discussing ideas with friends, politicians and various other people in the form of Socratic dialogue. Although many of Plato’s dialogues contain the ideas of Socrates, it is believed that the later works of Plato, such as the Republic, express Plato’s own ideas.
Perhaps the most unique idea of Plato’s is that of the theory of Ideas, explained best by the allegory of the cave. This is the idea that the world which we experience through the senses is not the ‘real’ world, and it is in fact the body which restricts us from this greater world which is immaterial. This material world is only a ‘copy’, and the world of concepts is ‘genuine’; the former is changing, the latter is permanent. Moreover, the allegory of the cave is used to describe Plato’s idea that only ‘philosopher-kings’ are fit to rule, since there are only few people who have come out of the cave and have seen the world as it really is-only the people who have exited the cave are fit to rule. There is no doubt that Plato has had a huge impact on western philosophy, and was the first person to set up a school of philosophy-the Academy. We owe Plato, and a long line of philosophers from him, a great deal.