Can you explain the difference between Shreya and Preya as described in the Sai Satcharitra?

Chapter 17 of the Sai Satcharitra explains the fundamental difference between Shreya and Preya. Shreya is described as the path of salvation or the Good, which is the form of discrimination and pure knowledge (Vidya). In contrast, Preya is the path of worldly joy or the Pleasant, representing a lack of discrimination and pure ignorance (Avidya). The text states that just as light and darkness are opposites, so too are these two paths. Those who are wise and courageous choose Shreya, while those who are dull-witted and caught up in worldly desires for things like wealth and status pursue Preya. This distinction is central to understanding the spiritual journey outlined in this chapter.