In "Ender's Shadow," Orson Scott Card explores the theme that our perceptions of reality can often limit our understanding of what is possible. The quote emphasizes the importance of keeping an open mind, as what we assume to be impossible may, in fact, not be. This idea challenges readers to reconsider their beliefs and to remain curious about the nature of existence.

The narrative encourages a balance between skepticism and possibility, suggesting that assumptions can hinder potential discoveries. By being open to the unknown, individuals may uncover truths that defy conventional wisdom, thus expanding their understanding of the universe and their place within it.