That the two extremes, the soul and the divine wisdom, may be united, they will have to come to accord by means of a certain likeness.  As a result, the soul must also be pure and simple, unlimited and unattached to any particular knowledge, and unmodified by the boundaries of form, species, and image.  Since God is unincluded in any image, form, or particular knowledge, the soul in order to be united with Him should not be limited by any particular form or knowledge.  –St John of the Cross ‘Ascent of Mount Camel’