Introduction The Leviathan and Republic theories proposed by Thomas Hobbes and Plato respectively are the two most solid arguments that attempt to explain an ideal state. From their arguments, it is clear that they each share a common sentiment regarding the need of a State. However, they seem to differ on the manner of administration to run the state. While Hobbes adopt a negative image of humans and view them as being materialistic on one hand, Plato adopts a positive image of humans and view them as inherently good on the other (Velasquez, 2008). However, they form a common ground by arguing that a society need to have some form of a government that creates a hierarchy of some sort. They both concur on the issue that without some sort of government, the society would be chaotic and would eventually crumble down. This paper will critically analyze the arguments posed by both Hobbes and Plato and to further establish the capability of human reason to determine the universal, objective, moral and political truths based on the two theories. The Republic Theory Versus The Leviathan Theory In order to form a solid basis on how the two theories visualize the ability of man to reason, it is important to have a valid understanding of the theories themselves. According to Plato’s Republic theory, he envisions a State run by individuals, each possessed with particular mannerisms that would otherwise render them more superior to others. He presents a positive attitude towards human nature in what he calls an ‘ideal state’. According to his theory, he views man as being naturally good and only requires a supreme power to guide him. According to Plato, if man and his government are well affiliated and balanced, then a just society comes into existence. In order to create a perfect state, the government created should further integrate virtues of knowledge, bravery, self-control and justice. Hobbes on the other hand shows his distrust in men and governance. He views man as greedy and up to no good. According to his school of thought, Hobbes adopts a materialistic philosophy and argues that human nature is characterized by desires and repugnance that ultimately lead to regular power struggle. He further contends that the virtue of morality is instinctively subjective and that human nature is naturally vicious and aggressive resulting to a fearful society. He envisions his imaginary State as one tainted with regular wars, death, violence and fear due to lack of adequate resources. He criticizes Plato’s idea of having a State with platonic love and contends that it is non-existence. He also believes that justice cannot prevail in such a society. The Ability Of Human To Reason Human reason is very important as it is related with the act of thinking and making sense of certain issues (Kellogg, 2002). Most theorists have attempted to learn and explain human reasoning. According to Hobbes, he describes reason as being calculative. Plato on the other hand views reason as a natural sovereign which should take over other things such as emotions and spiritedness. He further contends that humans achieve a form of happiness that is enjoyed in accordance with reason. Both Plato and Hobbes in their theories lay out solid argument