What is "separateness"?
You don't ask much do you?
Even if my personality is a process, fundamentally interlocked with other processes, the effect is to create the appearence of myself as a discrete entity. And it is that experience of myself as a discrete entity that is my experience of 'me'. Even if I have moments in which I am aware of my connection with the rest of the universe, even sometimes to the extent of forgetting myself entirely, this sense of connection can never be a permanent thing even for the most dedicated monk. While I'm alive the 'me-ness' will always push itself forward, must push itself forward if I'm ever to do anything.
And when I'm dead, I'm dead, whether I'm an entity or a process.
And how do you mean permanent state, do you mean it's eternal?
For my lifetime, of course - which I guess is eternity for me.
Fatal means it kills. What does this fatal illusion kill?
The hope of seeing the world as it is.
The true mystery of the world is the visible, not the invisible