The Allegory of the Cave (also called the analogy of the cave, myth of the cave, metaphor of the cave, parable of the cave, and Plato's Cave) is presented by the Greek philosopher Plato in his work the Republic (514a–520a) to compare "the effect of education () and the lack of it on our nature". It is written as a dialogue between Plato's brother Glaucon and his mentor Socrates, narrated by the latter. The allegory is presented after the analogy of the sun (508b–509c) and the analogy of the divided line (509d–513e). All three are characterized in relation to dialectic at the end of Books VII and VIII (531d–534e).