Why does Harold begin his walk so suddenly and without any preparation or supplies? Why does the girl at the garage inspire him to just keep walking?

Analyze the concept of faith as the author presents it in the text. Faith is never tied to any specific religion in the book, so what undergirds certain characters’ faith, giving them hope and convictions?

Mental health is discussed in many forms in the novel with references made to depression, Alzheimer's disease, and addiction. How does the author draw tension between this subject and the idea of being a good, mannerly Englishman? How does the lack of an open dialogue about mental health issues affect the characters’ lives?