But this argument equally means that no sign can be separated from both its denotational and connotational meanings, and, since the addresser is always using the sign for a particular purpose in a context, no sign can be divorced from the values of the addresser. Louis Hjelmslev (1899-1965) therefore proposes that although the function of signification may be a single process, denotation is the first step, and connotation the second. Roland Barthes (1915-1980) added a third possible step in world view or Weltanschauung in which metacognitive schema such as liberty, sexuality, autonomy, etc. create a framework of reference from which more abstract meanings may be attributed to the signs, depending on the context.