Can you elaborate on the concept of the four stages of speech as mentioned in Chapter 49 and its relevance to describing Sai Baba?

Chapter 49 uses the concept of the four stages of speech to illustrate the ultimate futility of language in describing the Sadguru's divine nature. The author explains that where the 'Para' (transcendental) speech turns back, and where 'Pashyanti' or 'Madhyama' (the middle stages) cannot even open their mouths, the fourth stage, 'Vaikhari' (the spoken word), is utterly powerless. This philosophical reference, as detailed in the chapter, serves to underscore that Sai's greatness is inconceivable and his Leela is inexpressible through any form of human communication.