Supernatural and Atheism

[Belacqua]

Many years ago I was designing exhibits for a new science museum, and we got in a bunch of brand new Apple IIe computers.

I asked the computer guy if computers get a little bit heavier when you load software into them. Understandably, he laughed at me.

Asking what particles a soul is made of is pretty much the same.

As energy is equivalent to mass, loading software into a computer will slightly increase its total energy, and, hence, its total mass.

In that case a body with a soul (in the Aristotelian definition) would have slightly more mass, because it is the soul which regulates all the body's activities, including all kinds of energy use. Without the soul energy use ceases (i.e. the body dies). 

So the soul is still immaterial, and has no mass of its own, but is the cause of increased mass in the body.