An individual permanent soul is not considered to be right understanding in Buddhism. What we usually consider our selves to be as something permanent, is a concept. I like to use the analogy of the Mississippi River. So what does the Mississippi have to do with the soul? It's on the map, it's right there but if you go to the Mississippi River, stand in one spot and you look at one spot in the middle of the river, is it the same water going by? You see it's never the same water but constantly changing, but the idea, the Mississippi river remains the same. So this concept of a permanent unchanging self is not considered to be right understanding, it's more of a changing process, this is so, arising due to the Law of Cause and Effect.