How does the text differentiate the transformative power of a saint like Sai Baba from that of a philosopher's stone?

Chapter 4 draws a fascinating comparison between a saint and a philosopher's stone, or 'Paris', to highlight the unique nature of a saint's power. While a philosopher's stone is famous for turning iron into gold, the text states that the action of a saint like Sai is "even more extraordinary." As explained in Chapter 4, the key difference is that a saint doesn't just transmute something of lesser value into something of greater material value; they give their own form—their very state of Self-realization—to their devotees. This implies a complete spiritual transformation rather than a mere material one.