The quote from Stephenie Meyer's "The Host" suggests that joy and pain are intrinsically linked, balancing each other in human experience. It implies that happiness cannot be fully appreciated without the presence of suffering, as both emotions contribute to the richness of life. The notion of an "unknown scale" highlights the complexity of emotions and the idea that one often illuminates the other.

This perspective encourages a deeper understanding of our feelings, suggesting that moments of joy may be more profound because of the challenges we've faced. It portrays life as a delicate balance, reminding readers that embracing both joy and pain is essential for personal growth and a fuller existence.