How is Sai Baba described at the beginning of Chapter 19, and what desire does this description inspire in the author?

At the start of Chapter 19, Sai Baba is equated with the ultimate reality, the Brahman. He is described as the object that resides in everything, from the smallest atom to the vast universe. The text elaborates that He is 'subtler than the subtlest and greater than the greatest.' This profound and formless description of the Sadguru inspires a deep desire within the author's heart. As mentioned in the chapter, the author wishes to give a tangible form, color, and shape to this Supreme Reality so that he might be able to behold it with his physical eyes, making the abstract concept of Brahman accessible.