Can you distinguish between the spiritual value of writing about worldly figures versus writing about saints, according to the provided text?

Yes, the text in Chapter 0 makes a clear distinction. Writing biographies of worldly figures, such as leaders and writers, is classified as a worldly service. While it may have value in public education, it is considered to be rooted in self-interest and limited by space and time, ultimately yielding no spiritual fruits. In contrast, writing the biographies of many saints is considered a form of Guru service and is said to yield spiritual fruits. However, even this is described as being 'one-sided or partial' and likely insufficient on its own to attain the ultimate spiritual goal. The text positions service to a single Sadguru as the highest path.