So on this view, again, free will is an illusion – you never really do anything freely. And that flies in the face of our experience of ourselves as free agents. I can freely do certain things or freely choose to think about certain things. I am not simply determined by my brain states. So freedom of the will – if you believe in that – gives you reason to believe in the reality of the soul and to reject these reductive and non-reductive physicalist views. source Unverified