Rene Descartes Rene Descartes (1596-1650) was not only one of the most prominent philosophers of the 17th century but in history of Western philosophy. Often referred to as the “father of modern philosophy”, Descartes profoundly influenced the European thought with his writings. Probably best known for his statement “Cogito ergo sum” (I think, therefore I am), the philosopher started the school of rationalism which broke with the scholastic Aristotelianism in two ways. Firstly, Descartes rejected the mind-body dualism, arguing that matter (the body) and intelligence (the mind) are two independent substances (metaphysical dualism) and secondly, he rejected the final causal model of explaining natural phenomena and replaced it with science-based observation and experiment. He spent a major part of his life in conflict with scholastic approach which still dominated the thought in the early 17th century and trying to convince the Churchly authorities that the new sciences are not ch...