Why is the Guru considered so important in Chapter 26? What is their specific role in helping a disciple?

In Chapter 26, the Guru is presented as absolutely essential for spiritual progress, being the only one capable of granting the knowledge of Truth to a disciple. The text explains that true knowledge dissolves the illusion of the physical world, and this awakening comes through the Guru's word. The author's prayer to Sai Baba highlights the Guru's role: he asks Baba to make his intellect turn inward, to grant him the ability to discriminate between the eternal and the temporary, and to help him develop unshakeable faith. The Guru is seen as the one who can solve the mystery of existence for the disciple who is otherwise lost in false logic.