You can't have it both ways. If there is a "higher order of abstraction" (whatever the blue blazes tht means) - another "world" which CANNNOT BE EXPLAINED BY MATERIAL FORCES or processes (such as the mind), then there necessarily is existence that is not material in nature? I put it to you simply: Are emotions and feelings and other processes of the mind, material in nature or not? Yes or no.Yes. There is no reason to think that there needs to be anything more than a functioning brain in order to produce a mind.
Well if it is only matter, and we know that matter has no personality and no higher purpose, just how can you state that your thought processes (ideas, theories) somehow have objective value, when the matter that produces them doesn't? What is the evidence that they have objective value? Does your brain tell you that they do (oops -back to chemical material processes again!)? How are your colliding brain atoms any more meaningful than mine?