"I think this axiom does not only say something about the act of acting on something but also adds to the definition of matter." The quote is really just a side note to what the axiom is saying. It is telling us that we can only know that which exist as matter. One could even say that it is dividing existence into two categories. That which we can know as human beings and that which we cannot know through the scientific method.

Another way to say this is that it is the method's limit. The scientific method is limited to the material world, but the world is more than just material. A lot of Science is discovering the invisible connections to things. A lot of times we know because of the effect that there is a connection but we cannot always discover the physical reason for the connection and that is where the idea of magic comes in. Don't get me wrong. I am not saying that there is magic. What I am saying is that the scientific method cannot ever under any circumstances discover such because it is outside the parameters of the method.

When a scientist claims that such does not exist they are really disclosing their ignorance of the scientific method and the parameters set by it. One can Google Schooler and look at the out of body studies showing that consciousness is not produced by the body or brain and realize that the corporal is real and exist. We may use science to find out where matter and the corporal interact, but we will never using the scientific method alone be able to explain the corporal.