How does Chapter 12 contrast the concepts of non-duality, worldly ignorance, and the value of faith?

Chapter 12 explores several deep spiritual concepts. It introduces the Guru, Sai, as one who removes the obsession with duality through the knowledge of non-duality, even for the dull-witted. This is contrasted with those who are ignorant of the spiritual supreme goal (Paramartha), instead wallowing in desires for a wife, son, and wealth. The chapter notes that God and saints feel pity for these ignorant individuals. Ultimately, the text argues for the superiority of faith over intellectualism, stating that the "stiffness of dry knowledge is fruitless" and that firm faith is the key to spiritual manifestation.