One of the main concepts in both Plato’s Republic and Hobbes’ Leviathan is justice. For Plato, the goal of his Republic is to discover what justice is and to demonstrate that it is better than injustice. Plato does this by explaining justice in two different ways: through a city or polis and through an individual human beings soul. He uses justice in a city to reveal justice in an individual. For Hobbes, the term justice is used to explain the relationship between morality and self-interest. Hobbes explains justice in relation to obligations and self-preservation. This essay will analyze justice specifically in relation the statement “ The fool hath said in his heart, there is no such thing as justice” Looking at Hobbes’ reply to the fool will demonstrate that his main goal was to declare what people ought to do when interacting with others and what can be expected in return for that behaviour. By analyzing the Republic, it will be shown that Plato would most likely differ with the statement made by the fool because the main of premise the book in itself is to discover the definition of justice. To understand Hobbes’ reply to the fool, one must first define justice according to Hobbes. He believes that justice is men performing their covenants made and the constant will of giving every man his own. A covenant is a part of a contract, or ‘mutual transferring of right, in which at least one of the parties ‘is to perform in time to come’. Hobbes maintains that it is never against reason to complete a covenant when man has the security that others will also perform covenants made with him. However, the problem that arises from forming covenants is that just because people enter into a covenant to perform some action, it does not necessarily mean that both parties will adhere to them. Thus, Hobbes begins his reply to the fool by stating that:For the question is not of promises...