 This line finds the youth to be the exclusive source of all beautiful things, expanding his "domain" even further than the first quatrains in which the youth is said to be the source of the legendary figures of Adonis and Helen.Scholars though have disagreements about the end for which the Platonic theory is used.In "the usual interpretation of an elliptical construction," the ending couplet expresses further praise for the youth, seeming to say that while all things beautiful are shades of the youth, the youth like nothing else, is distinguished by a constant, faithful heart.