Based on Chapter 1, why is the grace of Goddess Saraswati considered essential for the author?

The author of the Shri Sai Satcharitra considers the grace of Goddess Saraswati absolutely essential for writing the book. Chapter 1 describes her as the 'daughter of Brahma,' the 'Goddess of Speech,' and the 'Mother of the World.' The author explicitly questions how any literature could be achieved or how he could possibly write the book without her mercy. He pleads for her to make his tongue her swan and ride upon it, highlighting her role in granting the power of expression and knowledge. The text further identifies Sai himself with Saraswati, who sings his own life story for the salvation of devotees.