Gardner's closing argument brings together all of the book's themes into a direct challenge. Excellence is not something you achieve and then have. It is something you commit to and then maintain, through the small choices that accumulate into a life well-lived or a life of convenient adequacy. He is direct about what excellence costs. It asks a willingness to be challenged, to be found wanting, to try and fail, and to try again. It asks a tolerance for the discomfort of high standards when lower ones would be easier to meet. It asks the courage to be distinct, to produce work that is genuinely your own, when conformity would be safer and less exposed. These are not extraordinary demands in the sense of being superhuman. They are ordinary demands that most people find uncomfortable enough to avoid. The gap between adequate and excellent in almost any human endeavour is not primarily a gap of talent. It is a gap of commitment: the willingness to make the daily choices that maintain the standard when the easy choice is to let it slide. Gardner ends with a question rather than a prescription: what kind of person do you want to have been? Not in the public sense of reputation or recognition, but in the private sense of knowing what you actually brought to the things you cared about. The answer to that question is the argument for excellence that no external case can replace.