How does the author justify writing a new book about Sai Baba when several accounts already existed?

In Chapter 2, the author anticipates that readers might question the need for another book about Sai Baba. The justification provided is a beautiful analogy: Sai's life is compared to a 'vast ocean, an infinite mine of jewels.' The author sees himself as a small bird trying to empty this ocean, an impossible task. Therefore, he argues that it's impossible to describe Sai's life completely, and one should find satisfaction in whatever can be told. These stories are said to provide peace from worldly troubles and give devotees enthusiasm and steadiness of mind.