Bk. 1. Ch. 8. The soul that is clouded by the desires is darkened in the understanding and allows neither the sun of natural reason nor that of the supernatural Wisdom of God to shine upon it and illumine it clearly. #2. At the same time, when the soul is darkened in the understanding, it is benumbed also in the will, and the memory becomes dull and disordered in its dire operation. The intellect cannot get the illumination of God’s wisdom, the will cannot get the love of God, and the memory cannot get God’s image. #4. Darkness and coarseness will always be with a soul until its appetites are extinguished. The appetites are like a cataract on the eye or specks of dust in it; until removed they obstruct vision. #6. The affections and appetites deprive them of a treasure of divine light. #7. Any appetite, even one that is but slightly imperfect, stains and defiles the soul.