The mind and body are two distinctly separate things.

We’ve seen how our ability to think confirms our existence, and how God’s existence in turn is proven by the fact that this ability exists within us at all: we are “thinking things,” so to speak. But don’t “thinking things” require bodies of their own?
The mind is without physical properties like extension and substance. As we have seen, the existence of the mind is proven by the ability to think. But this thinking doesn’t need any physical properties to exist; the mind (or soul) can exist without it.
The mind works on the highest level of existence and can perceive and understand things without necessarily seeing them in an outside world: we know the sun more through our thoughts about it than through our sensory perceptions of it.
As we have seen in the proof of God’s existence, He is able to create anything. If God can make things of the highest level of existence, he can undoubtedly make physical things too; therefore we can assume that it is possible that bodies exist.
While body and mind both plausibly exist, they have two different levels of existence. The mind is the first, highest level of existence, while the body exists in its secondary form of sensing. As they exist on two distinct levels, they are independent of one another and can exist without each other. From this we can argue that the mind or soul can live on after the body is dead