Confusion, confidence, contention: our most common language provokes us to declaim and to doubt. What is a “fact”? How valuable is an “opinion”? What actions are “moral”? Is “belief” a form of “knowledge”? If you can answer these questions, here is another: “What makes your declarations true?“ That is the foundational question, for we make claims about truth, goodness, and beauty a thousand times a day. How do we justify these claims, not only to others but even to ourselves? In these pages, I examine the rocky history and current disarray attending “warrant,” our means for verifying our claims to truth, goodness, and beauty.