(1) The emphasis in the West on words. People tend to take the meaning of the words as the essence of their belief. [text based faith.]  The words of the Torah  and the Talmud are what defines our faith. Even if we do not understand the words.
For this reason it does not seem to me to be  a good idea to engage in  criticism or attacks on someone's faith. That is usually not a good idea unless it is  a case where there are no redeeming characteristics of their faith.

(2) The problem of universals in the West morphed into the problem of meaning starting with  Frege.


(3) One of the problems with Kabalah as a rule is the emptying of words of their meaning and putting in something else. I do not mean this as a critique on the Ari, but later supposed "mystics" that thought they were explaining him while in fact just explaining their delusions. I always found them annoying in their claims of grandeur with nothing to show for it but their own delusions.





[ So let me try to give a brief explanation. Knowledge that we have by our senses cant be checked and verified. Knowledge that is not by the senses might be right but how can we double check it? That is called A priori. If it is by definition then OK. Kant said we have a priori knowledge that is not by definition. How?  But we know it. This refers to the dinge an sich. Things that are but take away all their adjectives what is left? The thing in itself. [As Kant put it: things in themselves. In this realm of things in themselves--reality that we know but we do not know by reason nor by senses there are different areas of value. All form and no content as in mathematical logic. Then all content and no form--God. I hope this leaves my readers satisfied. 










(5) Now for how this relates to me personally.  My own approach is what I learned in the Mir Yeshiva in NY. That is in a nutshell: I go by the Written and Oral Law. That means I go by the Old Testament. But I do not say that I can understand it on my own. I use the Oral Law as my guide for interpretation. But since the Oral Law is a lot to read and understand, I listen to the Rishonim and Geonim as to what is the big message. That is I listen to what Saadia Gaon and Maimonides said it means. That is I defer to argument from authority when it comes to these larger issues. So in  nutshell you now know why the Duties of the Heart  (and other books of Musar of the Rishonim) and the Guide for the Perplexed of the Rambam are important to me. The reason is that they settle the issues of interpretation.
So for example I think Monotheism is the approach of the Torah. That is that God is the First Cause and simple. Not a composite. And he made the world something from nothing, not from Himself like a spider weaves a web. From Nothing. Ex Nihilo. And the world is not God. Nor is it any part of God. The reason I think this is not just the literal sense of the Torah. It is I confess because that is how all the rishonim (and the Ari himself) said it means.
But even more so. Now you know why Musar is important to me.  Because more clearly than anything else it clarifies these issues.