I don't think there's a soul. If you really think about what you "are", it's just your thoughts, memories and senses. Everything that you experience as "you" in this exact moment is the thoughts you're thinking, the memories you can recall and the information your senses are giving you. If someone were to make an exact clone of you, including all the memories in your brain, you would both think that you're the real "you" but you would also be two different people with different thoughts and perceptions. But what happened to the soul in this case? Has it been cloned too or has a completely new soul been created? In any case, there has to be a new soul because 2 people obviously can't have the same one. If you instead transplanted the brain into the clone, would your soul have been transferred? I would think so. But doesn't that just mean that what we think of as a soul, is just our brain?