Even though there is such a thing as positive religious value, unless  it is tempered down with reason, it gets attached to the Dark Side. That is why in the Middle Ages, the connection between Torah and Aristotle and Plato was a major emphasis. Especially you see this in the Obligations of the Hearts and the Rambam.

There is such a thing as insane religious fanaticism --. Rav Nahman brings out this point on the verses before the giving of the Torah. פן יעלו בהר "Least they go up into the mountain." In Breslov this is refered to as "ריבוי אור"{ribuy or} "too much excitement" [literally: "Too much light"].