Intellect is inadequate because not all things can be explained. Intellect needs faith.
Faith is impotent because it remains forever obscure. Faith needs intellect.
But they are opposites, as contradictory as yes and no:
Faith accepts; Intellect questions.
Faith surrenders; Intellect struggles.
Miraculously, there is a power that can join them in harmony, and it is called wisdom.
Wisdom is the capacity to see the truth as it is
and the quietness to allow it entry without compromise.

G_d has put us in a world of concealment. He wants us to reveal him by gradually removing the layers of concealment behind which the spiritual world is revealed. He wishes for us to know Him through levels of sensations of His sublime qualities of love.
By performing spiritual work defined in the inner depths of the Torah, we remove the concealments through feelings of love of others within a spiritual group that aspires for revelation.
From the power of bonding in love of friends we reach revelation of the love of G_d. We shift from egoism to altruism, the spiritual world.
We shift from blind faith to true revelation of wisdom.