In Meditations on First Philosophy, Descartes argued that the mind and the body are independent but inter-correlated while the mind can exist without the body; what is known as essential dualism. Based on this theory, the mind is not a material thing because it has none of the properties that material things have such as spatiality and divisibility. However, there are some facts that challenge Descartes’ idea of the immateriality of the mind as well as its independence from the body. One of those facts that dualism cannot explain is what happens to some brain damaged people (Descartes, 2008, p. 14).
