According to Chapter 49, what is the author's perspective on describing the Sadguru, and why does he choose to write despite his reservations?

Chapter 49 explains that the author believes silence is the truest form of praise for the Sadguru, as even the Vedas grew weary of describing His greatness. However, he finds he cannot remain still because each quality of Sai compels him to speak. He compares writing the book to preparing a "culinary arrangement of essence," a sweet feast that he feels he must share with fellow listeners so that the bliss can be doubled. This desire to share the joy with others motivates him to overcome the challenge of describing the inexpressible nature of the Sadguru.