What exactly is a soul? What do you think it's made of? Where does it go when you die?

I've always been fascinated by this, but I guess I don't fully understand, and I thought maybe you people would have to interesting views on these questions. I mean, what exactly is a soul? Does it live on after you die? What makes your unigue from others? I just think it's so mind boggling, and I'd love to see what you all think about it.