I'm wondering who believes in dualism here.
The concept is that there is some absolute truth that is above human intellect and knowledge in the world. The idea that our mind and body are different aspects and that even without the body the mind is free to live. I think that's the easiest way to state it.
I'll start off by saying I don't believe in dualism because I believe the mind is a substance of the body and that they exist together. I think that if you die, that your mind will also seize to exist due to the fact that the internal monologue that posses is an asset of your brain and the social world.