> Also, and this is asked in total seriousness, how can I find out whether or not I have a soul?

I am not going to provide detailed evidence for why I say the following, so you can accept or ignore my assertions.

(1) You don't HAVE a soul. The accurate conception is, your soul HAS you. This is why the stories of people "selling their souls to the devil" are humorous (and sad). You can no more sell your soul than the dog being taken for a walk by its owner can sell the owner.

(2) That said, using common terminology, as for whether you personally have a soul, are you: Someone with no compassion at all, completely selfish and self centered, and a a heartless serial killer? If so, you may have "broken off" from your soul. In this case don't worry, "you" are utterly doomed. But this condition is extremely rare.