What does Chapter 41 teach about the experience of receiving the Guru's grace and Darshan?

Chapter 41 explains that the Guru's grace is a powerful force that accomplishes what great personal effort cannot. The text states, "That which cannot be attained even by great effort is set in motion by the power of the Guru’s grace." This grace is not something one can demand, but it is found through devotion and focusing on the Guru's glory. Regarding Darshan, the chapter notes the profound good fortune of devotees who receive Sai's Darshan "even without [formal] worship, rituals, or devotional songs." It also describes how even those who came with pride and an intent to critically inspect Sai Baba would leave their ego behind, returning happy with the joy of His Darshan. As Chapter 41 illustrates, the Guru's presence and grace can purify the mind and bring immense joy.