 Character-sensitive expressions can give rise to hyperintensionality. Take “It is a priori that”: It is a priori that Hesperus is Hesperus; it is not a priori that Hesperus is Phosphorus. Although “Hesperus” and “Phosphorus” have the same content (the planet Venus), they can differ in character. There may be contingent a priori cases: Elvis says “I am here now” in a context where the assigned content is that Elvis Presley is in Graceland on noon of 25 December 1975. “I am here now”, some claim, can be known a priori by Elvis, but he cannot know a priori that Elvis is in Graceland on noon of 25 December 1975.