Besides that there are idolatry and Sitra achra [Dark Side] problems with Eastern Religions and all mysticism.The only thing I see as being a valid set of values is the Torah system with no mysticism mixed in.
Mysticism is how the Sitra Achra managed to penetrate the Torah world
To this Brett Stevens answered to me:
My basic feeling about the Advaita Vedanta is that its does not start out with obvious first principles.
That was the version of the book that I read many times over. I still have to say that I was not convinced. The closest I saw as an argument was Spinoza and even there I was not convinced. [He assumes nothing can affect a substance. That stacks the deck for his approach. But it is not a obvious first principle.] [On the other hand it clear substances can affect each other.]
I did a bit of the Upanishads and Sutras. But took a different path than you. From Spinoza to Maimonides, Kant, and Schopenhauer. I have great respect for Spinoza and I can understand why you would think he is true. I think it was a combination of things that took me on a different track. (1) Leibniz (2) my own critique on him based on my understanding of Substance based on Aristotle. From my side of things it find it hard to imagine taking either the rationalists or the empiricists based on Kant's Critique. To me it seems there simply is no choice for anyone except to go with some school of thought that takes Kant into account. That means some school of German Idealism.
So I settled on the Kant school which seemed to make the most sense to me. You really have to combine it with Schopenhauer. You also need to be able to read through the chatter of later 20th century philosophical pseudo intellectuals.]
If I try to explain what I like about Kant it would probably go like this. I hate when stupid philosophers talk about science. I feel like screaming at the top of my lungs. Even the really smart ones like Edward Feser. The only one that did his homework is Kelley Ross and he shows very well how Kant's system works well with Quantum Mechanics.