Rationalism and Empiricism are most likely the two most famous and intriguing schools of philosophy. The two schools deal specifically with epistemology, or, the origin of knowledge. Although not completely opposite, they are often considered so, and are seen as the Jordan vs. Bird of the philosophy world. The origins of rationalism and empiricism can be traced back to the 17th century, when many important advancements were made in scientific fields such as astronomy and mechanics. These advancements were most likely the basis for a sudden philosophical argument: What do we truly know? People wondered whether science was really giving us knowledge of reality. The quest for the answer to this question led to the development of these two schools of philosophy. Two of the most famous philosophers of epistemology are Rene Descartes and David Hume, the former being a rationalist, and the latter an empiricist. In this paper I will attempt to give an understanding of both rationalism and empiricism, show the ideas and contributions each of the men made to their respective schools, and hopefully give my personal reasoning why one is more true than the other.Rationalism was developed by several important philosophers all around the 17th century. Descartes, Spinoza, and Leibnitz are all given credit for developing rationalism. Rationalism is the idea that reason and logic are the basis of knowledge. It says that knowledge is innate, and that it cannot come from sources such as the senses. Rationalists believe that we are all born with a means of obtaining truth and knowledge. Empiricism also came about in the 17th Century, mostly through the ideas of the philosophers Locke and Bacon. Although Hume wrote several decades after these two, he probably wrote the strongest arguments for empiricism, covering some questions not answered by Locke and Bacon. Empiricism says that all real knowledge is based on experience. It claims that pe...