I love that image I have it on my main FB profile as my cover picture. Atheist just means don't believe in any gods. So, the rest is up for contemplation by any atheist :)

I personally do not believe in any spirits or any of that only because I have not seen any :) Until I do I just don't see any point in spending energy thinking about it. Even the Buddha said he would not directly answer the question is there a self or is there not a self when asked because these people asking had a more pressing issue - they were causing themselves suffering by asking meaningless questions. Of course, we know he taught anatta but until one has developed right views by following the Noble Eightfold Path such questions are meaningless. He said it not me lol. He also said don't believe anything he said until you experienced it yourself. I've just been that way for about the last 10 years :) . Have a lovely day.