What is the primary theme and significance of Chapter 45 in the Shri Sai Satcharitra?

Chapter 45 of the Shri Sai Satcharitra serves as a profound reflection on the Guru's paramount importance and the sense of loss following Sai Baba's physical departure. The chapter begins with salutations and emphasizes that the Guru's grace is even more powerful than the pursuit of Moksha (liberation), making the impossible possible and bringing happiness to worldly life. As detailed in Chapter 45, it then laments that the physical Sai-form, which brought contentment and removed fear, is now lost to sight. However, it concludes by highlighting the enduring significance of the Satcharitra itself, described as Sai's literary form, which will continue to provide remembrance and bring peace to devotees.