Obeying the theory of natural law is the only true and moral way to live life; above all, a life lived in the image of God. The presence of God is a guiding factor in achieving a moral and virtuous life, which can only be achieved by following the theory of natural law. God created a set of laws as supreme guidance for human beings to live life, like every law these laws were created to ensure the well-being of everyone. The laws he created are civil law, natural law and divine law. God created them from a law much superior to the others, of which only God himself has knowledge, the eternal law. Humans actively participate in God's eternal law by using reason in accordance with Natural Law to discern what is good and what is evil (Magee 1). Of these laws natural law is the most vital, natural law uses nature as a guide to morality and humanity, to decipher right from wrong and the moral from the immoral. “Natural law theory is a theory about the relationship between morality and human nature, the theory that who we are determines how we should act” (Holt 1). Nature is a definitive guide to use when deciding what is appropriate and how God would have life lived. Natural law is used using reason to develop knowledge of life and oneself. Natural law theory is the only way to achieve a moral life and can be demonstrated as a valid theory when the existence of God is demonstrated, the explanation of nature being a guiding factor for morality is given, and demonstrates the theory with examples of how ethics is applied. The existence of God, our omnipotent creator, is demonstrated by St. Thomas Aquinas in his Summa Theologica, where he explains his proofs. Thomas Aquinas simply uses life experience to prove the existence of God. Two... halves of paper... to the decision that the only true way to allow God to give humans the true enlightenment needed it is understanding and obeying natural law. It is essential to use natural law theory as a guideline for living a moral and virtuous life. Works Cited Archon. "St. Thomas Aquinas 5 Proofs of the Existence of God." Catholic Community Forum - The Catholic Community Forum. 2011. Network. 07 December 2011. .Holt, Tim. "Philosophy of Religion »Natural Law Theory". Philosophy of religion. 2008. Network. 06 December 2011. Magee, Joseph M. "St. Thomas Aquinas: On Natural Law." Thomistic philosophy: the philosophy of Thomas Aquinas. 27 August 1997. Web. 05 December. 2011. .