Literary theory can be said to come into being when the approach to literary texts is no longer based on non-linguistic, that is to say historical and aesthetic, considerations or, to put it somewhat less crudely, when the object of discussion is no longer the meaning or the value but the modalities of production and of reception of meaning and of value prior to their establishment — the implication being that this establishment is problematic enough to require an autonomous discipline of critical investigation to consider its possibility and its status. …