Religion is a matter of soul and not of intellect, and the greater the development of the soul in the right direction, the higher will be the spiritual state or condition of the soul.
Mere intellectual belief, no matter how intense and undoubting, will not tend to bring about this spiritual development, for "religion is really nothing but the relationship and harmony of men's souls with the Soul of God."
The mind will not be sufficient to create this state because the mind of man cannot possibly bring into harmony the Soul of the Creator and that of the creature. Mind in its exercise may tend to awaken the soul to this possibility of relationship, but only the workings of the soul can effectuate the complete unity of the Creator and the created. Only soul can speak to soul, and mind is only a helper, provided the soul is alive in its longings.