Faith with which intellect does not agree arouses anger and cruelty
That is, faith that contradicts reason, or that demands belief without reflection, especially antirational faith (i.e., belief because it is absurd).
And if a person (or society) accepts this type of faith, a deep conflict between faith and reason will arise in one's soul, leading to strong tension in subconscious that might break through to the surface in the form of anger or even cruelty.
In Hebrew aluv: demeaned, wretched, impoverished, pathetic
Because the acceptance of such faith debases and insults reason, reason (despite the fact that it was overpowered and suppressed) cannot internally be reconciled. Then the accumulated inner pressure bursts through in the form of anger and cruelty.
Supernal faith is unattainable by reason, just as reason cannot grasp the ways of God. Supernal faith cannot be formalized, whereas lower faith is formalized, and must therefore accord with reason.
That is, the clear sense of the divine manifestation allows reason to step aside without a sense of injury.
That is, in this situation, the lower, ordinary faith, on one hand, springs from the transcendence of reason, and on the other, it does not contradict reason.
The process of supernal faith's descent into lowly faith is its formalization, which, as noted above, must not be in contradiction to reason. Rav Kook emphasizes that reason must not be neglected; it must be seriously considered, not replaced by feelings or imagination.
This is a reference to Rachel and Leah, "both of whom built up the House of Israel" (Ruth 4:11). Rachel (who embodies beauty, Joseph, spirit expressed through material achievement) represents the visible world, and Leah (who is known for "weak eyes," Yehuda, David, the spirit of teshuvah - remorse, stepping across the material) represents the concealed world. Only the unification of these two aspects can set the Jewish people on the right path.