Ray Brassier on the fundamental problem of philosophy.
[T]he metaphysical exploration of the structure of being can only be carried out in tandem with an epistemological investigation into the nature of conception. For we cannot understand what is real unless we understand what ‘what’ means, and we cannot understand what ‘what’ means without understanding what ‘means’ is, but we cannot hope to understand what ‘means’ is without understanding what ‘is’ means.
This much Heidegger knew. Unlike Heidegger however, we will not conjure a virtuous circle of ontological interpretation from the necessary circularity of our pre-ontological understanding of how things can be said to be. The metaphysical investigation of being cannot be collapsed into a hermeneutical interpretation of the being of the investigator and the different ways in which the latter understands things to be. Although metaphysical investigation cannot be divorced from enquiry into what meaning is, the point of the latter is to achieve a metaphysical circumscription of the domain of sense which avoids the phenomenological equivocation between meaning and being.