In this paper I will discuss the similarities and differences between Rene Descartes and John Locke, David Hume and Plato. They believe in rationalism or empiricism respectively. Rationalist believed that an important group of fundamental concepts are known intuitively through reason, opposite to experience. For rationalist, the knowledge is innate and that it can¡¯t come from sources such as the senses. They are well known as Descartes, Plato. Empiricist argued that all ideas tracer ultimately back to experiences, such as sense perceptions and emotion. &…