Descartes dispelled this a long time ago.
Even if every thought, sensation, perception, experience is a lie.
The mind is still that thing being lied to.
Is it? Isnt the mind the thing that lies?
Sometimes it lies to itself. It is good at forgetting, too.
Self-reference is the essence here. If all experience is to be doubted, still the doubter is left. There is a self that is more than just mind for that mind to recognize as myself. There is something like it to be me in a way a movie of me is not. Nagel asks in his essay
Is there something like it to be a bat? Given the (barring true mind reading) fact that experience -- all qualia -- is private to me the Cartesian doubter is left with the solipsistic "
Ergo Sum."
Is there something like it to be Fred? or Jim? or President Obama? Is there something like it to be a dog named Jack? or Henry? or Spot? Is there something like it to be a mouse? a clam? a limpet? a newborn kangaroo? a mushroom?
Life does things dictated by genetic programming. Instinct to fear certain acts. We are startled by a lot of things and not by others. There are other instincts. Among them is this thinking thing. When operating normally we think -- go ahead and try to stop thinking for a bit. It is impossible to stop thoughts unbidden from arising in the mind. Thinking is done because of our genetic programming. And, being human, we can share others' experience vicariously. I don't give a damn if "your" red is "my" red. In fact I'm pretty sure it's not given that perceived shade depends on what that eye has seen recently. A pink container through a green glass appears to be the same shade of pink as seen through air. I know that can't be right if color is strictly about wavelength. It isn't, y'know. Context -- the presumed lighting color -- determines the color you experience. Many optical illusions are the brain correcting for the reality of common experience. Two squares on a Rubik's Cube of the same hue appear to be entirely different colors based on presumed shadow. We may not see the "same" red, but our brains -- our minds -- fall for the same error in the same way.
Experience is the lie. Experience has been filtered by our unconscious long before the conscious mind experiences. And, although the brain is quick and all, all data has been delayed by processing. Alway experiencing what just was, not what currently is. What time is the mind aware of? Just a few milliseconds or so behind reality for nearby objects to a few minutes ago on our sun to a few hours ago at Pluto.
Looking outward the mind sees the past flowing inward from all directions of space. And sees the future flowing outward in all directions in that same space. The mind is in the middle, having both a
location and a
moment -- here and now to call its own. The past may be poorly remembered and the future poorly planned, but here and now I am. There is something like it to have a here and now and know it.
A body with a brain is created through embryology. Mind is self-created. An idea (which may be, in whole or in part, an illusion or lie)
of self
to self.