Natural law can be described as a system that purports its intrinsic values based on human nature, which can be applied independently. The natural law theory states that every person is entitled to inherent rights that are neither conferred by legislation but through natural reason or God. Plato’s work was based on a republic that majored in political philosophy, ethics, and metaphysics. According to Plato, he grouped politics into four tyranny, democracy, timocracy, and oligarchy. He believed humans are selfish in nature; therefore, they can destruct democracy. Also, Plato states that we live in an ordeal universe whose basis of nature is forms and the most fundamental is the form of good because good is the cause of everything. Therefore, with the help of it, people will act wisely. While Aristotle believes in whatever the law has commanded will vary from time to time, but nature should remain unchanged. However, Aristotle posited natural justice as a political species justice majorly the scheme of corrective justice implemented under the best political society. Apart from laws established by other people, there is a common law in line with nature, which is the universal law.