Using the analogies of the tortoise and the gem, analyze Baba's description of the Guru's role in a disciple's development.

In Chapter 19, Baba uses powerful analogies to describe the Guru's subtle yet profound influence. He compares the Guru's process to polishing both a stone and a gem; while both are polished, only the gem becomes a brilliant jewel, implying the disciple's inherent readiness and quality are crucial. Furthermore, Baba describes his Guru's protective care as being like a mother tortoise who nurtures her young on the opposite riverbank with her loving glance alone. This illustrates that the Guru's grace is not always conveyed through direct, overt instruction like mantras, but through a constant, merciful gaze that provides protection, contentment, and spiritual nourishment, even across great distances.