Based on the provided text, what is the philosophical concept behind Sai being the 'true speaker' and how does this relate to his detachment?

The text presents a profound philosophical concept regarding Sai's role as the 'true speaker.' Chapter 36 explains that the human author's 'I-ness' (ego) is set aside, as the playful Sai himself takes over the narration to make his own qualities heard. This illustrates a state of divine agency working through a human vessel. This concept is directly related to his detachment, as the text notes he is 'indifferent to the "I am He" (So-ham) attitude' and stays 'distant and detached from his name' while causing various events to occur. As detailed in Chapter 36, he is the ultimate cause and narrator, using the speaker and listener as a 'mere pretext' to manifest his grace and fulfill the spiritual desires of his followers.