In "Speaker for the Dead," Orson Scott Card explores the concept of knowledge and belief. The quote emphasizes that our certainty in what we know is often based on a deep belief that leads us to act. This sense of conviction allows us to define knowledge as something we can rely on, akin to established facts that shape our lives. It underscores the human tendency to act on beliefs, suggesting that what we accept as truth plays a crucial role in our decisions and interactions.

The idea presented in the quote reflects our intrinsic commitment to what we consider knowledge. It highlights the relationship between belief and action, suggesting that when we reach a certain level of assurance, we engage with the world as if our beliefs are undeniable truths. This notion resonates with the human experience and our quest for understanding, reinforcing the idea that our convictions are fundamental to our existence and relationships with others.