According to Chapter 17 of Sai Satcharitra, what is the fundamental difference between the paths of Shreya and Preya?

Chapter 17 of the Sai Satcharitra explains that Shreya and Preya are two distinct paths with opposite natures, like light and darkness. Shreya is described as the path of the Good or Salvation, representing pure Knowledge (Vidya) and wisdom. In contrast, Preya is the path of the Pleasant or worldly joy, which stems from pure Ignorance (Avidya). The text states that a person whose mind gravitates toward Preya falls away from their true self-interest, as this path is favored by the ignorant, whereas Shreya is embraced by the wise.