Can you explain the nature of the Soul as described in Chapter 19, particularly how it remains pure and distinct from the body?

As detailed in Chapter 19, the Soul is self-luminous, pure consciousness, changeless, and formless. It is fundamentally distinct from the body, senses, mind, and life-force. The text clarifies that although the Soul appears in the world through the actions of Maya, it remains untainted, much like a crystal. A crystal may appear to take on the color of a nearby object, but it remains pure and separate from that color. Similarly, the Soul is not truly affected by its association with the body; the ego of 'I am the body' is considered a false bondage for the liberated one.