How does Chapter 19 use analogies to explain the nature of the Soul and the illusion of Maya?

Chapter 19 employs several powerful analogies to elucidate complex philosophical concepts. To explain the Soul's untainted nature, it compares the Soul to a crystal that may appear red or black depending on what's near it but remains intrinsically pure and colorless. This illustrates how the changeless Soul appears to take on attributes from its surroundings due to Maya, but is never actually affected. To explain Maya's illusion, the chapter cites the examples of a mirage on a plain, the false glitter of silver on a seashell, and mistaking a coiled rope for a snake. These analogies demonstrate how we superimpose a false reality, like the ego of 'I am the body,' onto the true reality of the Self.