A suitable starting point is the Tractatus of the young Wittgenstein: a 'sketch" — profound and paradoxical — of a transcendental semantics or logic of language, which cannot justify its own method. The aforementioned ambiguity between methods and methodology was already present in this 'sketch", which determined all subsequent developments of Analytical Philosophy. With respect to our objectives in this study, the origin of this ambiguity can be shown very well if we turn to Wittgenstein's short but influential discussion of the so-called "intentional" or "belief-sentences".