How does writing a biography for a worldly figure compare to writing one for a saint or Sadguru?

The text draws a clear distinction between these two acts. Writing the biography of a worldly Guru is described in Chapter 0 as a service of a worldly nature, whose importance and fruit are not eternal but limited by time and space. It is often rooted in self-interest and therefore does not yield spiritual fruits. Conversely, writing the biographies of saints is a form of Guru service that does yield spiritual fruits. The ultimate form of this service is writing the biography of one's own Sadguru, which is presented as a path toward the ultimate spiritual goal of salvation.