In Nathaniel Hawthorne's "The Scarlet Letter," the quote reflects the perspective that dishonesty distorts one's perception of reality. For a person who is untrue, the entire universe seems insubstantial and elusive, ultimately diminishing to an insignificant presence. This highlights how deception affects not only the world around a person but also the individual's self-worth and identity.

The quote further suggests that when one presents themselves in a misleading manner, it leads to a loss of their true essence. Instead of being a genuine individual with substance, they become like a mere shadow, lacking depth and authenticity. This notion emphasizes the profound impact that falsehood can have on existence, both personally and universally.