In "Blue Labyrinth" by Douglas Preston, the story delves into the burdensome nature of truth. The characters grapple with the heavy realization that knowing the reality of situations can lead to devastating consequences. This challenging knowledge often brings forth more pain than comfort, highlighting the complexities of human understanding.

The novel suggests that while truth is often regarded as virtuous, it can also be a source of profound suffering. The quote, "How awful a knowledge of the truth can be," encapsulates this duality, inviting readers to ponder the paradox of seeking truth at the potential cost of inner peace and well-being.