Chapter 17 uses an analogy of a swan with milk and water. How does this relate to the concepts of Shreya and Preya?

In Chapter 17, the analogy of a swan (Maral) separating milk from water is used to illustrate how a wise person should navigate the choice between Shreya and Preya. The chapter explains that just as milk and water can be mixed, the paths of Shreya (the Good) and Preya (the Pleasant) are often blended in life, making the choice difficult. However, a courageous and intelligent person, like the swan that drinks only the pure milk, will cling only to Shreya and turn away from Preya. This powerful metaphor from Chapter 17 highlights the importance of discrimination and wisdom in choosing the path of salvation over worldly distractions.