There must not be anything hypothetical in our considerations. we must do away with all explanation, and description alone must take its place. And this description gets its light, that is to say its purpose, from the philosophical problems. These are, of course, not empirical problems; they are solved, rather, by looking into the workings of our language, and that in such a way as to make us recognize those workings: in despite of an urge to misunderstand them. The problems are solved, not by reporting new experience, but by arranging what we have always known. Philosophy is a battle against the bewitchment of our intelligence by means of our language.
from Philosophical Investigations I:109