In chapters 11 and 12, Lewis addresses what he describes as the two aspects of faith. The first, covered extensively in this chapter, refers to "the art of holding on to things your reason has once accepted, in spite of your changing moods." Lewis examines the role that temptation plays. He also addresses our notions that God has set before us an exam that we can pass and effectively put him in our debt to hold up his end of a contractual bargain. He then lays the foundation of looking at the second aspect of faith, which he takes up in detail in the next chapter.