Comparison of Parable of " The Signet Ring and the Shepherd" in the Works of Nizami and Plato

Persian literature is enriched by mellifluous and beauteous stories which have passed from one generation to another in centuries and thus we have access to them at present time. There are also tales، stories and parables from other nations intermingled into Persian literature. Some tales، stories and parables have also gone to other countries and nations from Iran. Researching on how these literary forms have penetrated or entered other cultures and literatures is a very precious activity in which many people spend time. The present article studies the origin of one of the parables of “Iqbal Nameh” by Nizami named “The Signet Ring and the Shepherd” and how it is rooted in the parables of the book “The Republic” by Plato.