This thesis explores the idea of the Natural Law by looking at the ideas of three thinkers: Aristotle, Thomas Aquinas and John Locke. It answers the question of what the Natural Law is, and further explains the derivative of this Natural Law, Natural Right. It further substantiates a relationship between the two. Finally, the thesis observes the prevalence these terms have in the American context, both in the Declaration of Independence as well as contemporary manifestations.