The quote from Milan Kundera's "The Unbearable Lightness of Being" suggests a distinction between books suited for daytime and those meant for nighttime reading. This implies that certain books resonate with the clarity and brightness of day while others delve into the introspective and reflective nature that often emerges in solitude after dark.

This idea highlights the different moods and states of mind that affect how we engage with literature. Daytime books may inspire action, clarity, and practicality, while nighttime reads invite deeper thought, emotion, and existential contemplation, emphasizing the complex relationship between time and our reading experiences.