“Why is it so much harder to appreciate that thinking is an aspect of the brain, that also could be described, in principle, in terms of the self-same physical laws? The answer is that minds do not seem physical to us because we know so little of the processes inside brains.
A related reason why the mind-brain problem seems hard is that we all believe in having a Self – some sort of compact, pointlike entity that somehow knows what’s happening throughout a vast and complex mind. It seems to us that this entity persists through our lives in spite of change. This feeling manifests itself when we say I think rather than thinking is happening, or when we agree that I think therefore I am, instead of I think, therefore I change”.
Marvin Minsky, “Minds are simply what brains do” (1997).