Descartes once said, "There is a big difference between body and mind." This sentence comes from the idea that Descartes believes that two substances constitute reality. In fact, Descartes' entity is called an extension or material presence, which means that it occupies space. On the other hand, it has nothing to do with thinking or thinking. This is called binomorphic metaphysics. Descartes began exploring matter and insignificant things through paradox of epistemology. This is only through epistemological analysis methods to find the truth of metaphysics.
The dualism of Descartes' mind and matter means the concept of humanity. According to Descartes, humans are a complex existence of thought and body. Descartes prioritizes the mind and thinks that the mind can exist without the body but the body can not exist without the mind. In meditation, Descartes believes that although the mind is a substance, the body consists only of "accidents". However, he believes that the mind and body are closely related. Nature tells me through pain, hunger, thirst, etc. Together, I will form a unit with the body. I will not feel pain even if my body is hurt, but I will only be perceived by intelligence just as a crew sees something broken on his ship.
Even in studies of mind philosophy, cognitive science, neuroscience, etc., we use Descartes' heart and body dualism as a foil. This usage is rooted in the criticism advocated by Princess Bohemian Elizabeth (1618 - 1680). She believes that when Descartes considers the real distinction between physique and body, they believe that causal interaction is impossible. After all, causal interaction can be achieved through contact; things like the body touch each other through their surface. But unless they spread, the heart can not have a surface, so the body can not touch the heart, and vice versa.
Descartes proposed a discussion on separability to validate and explain his theory. His argument is that if the mind is the same as the body, whatever is true to the body and vice versa is the same for the body; but the spirit is indivisible, the body is separable, hence the spirit is body It is different. In other words, according to Descartes, the mind and body are two different things. He said, "When thinking about your own idea, in other words, when I think about myself as I am only thinking about something - I can not distinguish any part - I am single unity I understand that cutting one foot, one arm, or other limbs will not result in something getting into your head. "