Can you explain the analogy of the swan and the mixture of milk and water from Chapter 17?

In Chapter 17 of the Sai Satcharitra, the text explains that the paths of Shreya (the Good) and Preya (the Pleasant) are often blended together in life, much like milk mixed with water. The analogy of the swan, or 'Maral,' is used to represent a wise and discerning individual. Just as a mythical swan is believed to have the ability to drink only the pure milk from the mixture, leaving the water behind, a courageous and intelligent person is able to distinguish and cling only to Shreya, the path of salvation, while completely turning away from the worldly temptations of Preya.