How does the author of the Sai Satcharitra describe their role and motivation for writing the book in Chapter 2, especially concerning their own perceived limitations?

In Chapter 2, the author humbly describes their role as merely an instrument for Sai Baba, stating, "Making me his pen, Baba himself will guide my hand. I am merely the owner in name; I only shape the letters." The motivation was to collect Baba's stories for devotees who hadn't seen Him in person. However, the author expresses significant self-doubt to Madhavrao (Shama). Having crossed sixty years of age, the author felt their intellect was not sharp and feared the effort might fail due to weakness. Despite these doubts, the driving force was to undertake the project for Sai’s love and to achieve a spiritual goal, believing it was the only worthwhile use of their words.