Quote Originally Posted by Ironside
Here's another hard one on the concept of a soul. Say that someone have an severe accident and to save him, the doctors had to replace large part of his briain causing permanent and severe memory losses. It will also cause a considerble personality chang, making close members of the family no longer recognising this person (who don't remember them anyway).

Did the original person die, or to be more correct, the thing you can define as a soul? And is his body inhabitated of another soul now, or is it "soulless"? How severe does this need to be? A massive personality change? Cutting the head off and replacing it with another one (and getting a person that is as alive as you and me)?
No need to postulate an accident. Are you the "same" person as you were when you were aged 5? Will you be the "same" person as you are now when you are aged 75 ?