This is an example of a Cartesian circular thought pattern. DesCartes would muse that there was no.
absolute way to irrefutably deny that there was an evil demon in him somehow convincing him that there was(half full) bottle on a table in front of him. He would conclude that if he could not be certain of that fundamental axiom, then he could never indisputably deny that he was being somehow perceptually deceived, therefore he could not be absolutely certain that there was actually a bottle on a table in front of him. Using this type of Cartesian thought, DesCartes developed skepticism to many things that the average person takes as a granted part of reality, because he questioned whether the average person could really trust his perception. He surmised that even if he could be deceived, the very fact that he was deceived was proof of his existence within himself, within his mind. He deduced that "I doubt, therefore I think, and therefore I am".".
DesCartes accepted the existence of God, and suspected that his ideas came from external, corporeal origins. If his conceptual continuity did not originate from external sources then God must be a deceiver, but as he had already observed, this was absurd, as a perfect entity could not by nature be deceptive. From these premises DesCartes drew that material substance and the external world do in fact exist.
Cartesian thought principle creates a whole methodology for perception analysis by contemplating whether a physical body is necessary to the essence of existence. He imagines existence without a physical body but not without consciousness/experience. Cartesian dualism states that essentially a person's mind functions as independent substance from the body. He said that the only essential property for a physical thing is to occupy space. The mind does not occupy space, therefore there are two types of things, one being the mind, and the other being pieces of extended substance.
[Mill, J. ... L.). (1963) Collected Works of John Stuart Mill. ... Press: Oxford] REALITY IN EXISTENCE OF THE SELF: Rene Descartes has been one of the most profound influences in metaphysical and analytical philosophy. ... This strategy is clearly stated in Descartes" Meditations. ... [Descartes, R. ...
