Meditation One concerns all things that can be identified as doubtful.
He says that he often does similar things when he is awake and asleep. In his Meditation VI: Of the Existence of Material Things, and the Real Distinction between the Mind and Body of Man, he discusses his belief that the mind and body are two separate substances, claiming that the nonmaterial mind and the material body, while being ontologically distinct substances, causally interact; a belief called Cartesian dualism John Locke, Immanuel Kant, and countless other philosophers wrote largely in response to Descartes.
Descartes never served combat, but he did have a life changing moment while in the army. Doubted who you were.
By saying, in the second meditation, that we perceive things by means of our intellect alone, and in the sixth meditation, that we do not perceive pain by means of the intellect alone but rather by an intermingling of our intellect and our senses, Descartes brings forth the questionable tension In conclusion, the philosopher ties together the complex concept of mind and body using a metaphorical piece of wax I mean, the mind itself is so perplexing that we are still learning stuff about it daily.