that totality of the structural whole which we are seeking. In the unity of those characteristics of Dasein's Being which we have mentioned, this Being becomes something which it is possible for us to grasp as such ontologically. How is this unity itself to be characterized?
Dasein is an entity for which, in its Being, that Being is an issue. The phrase 'is an issue' has been made plain in the state-of-Being of understanding-of understanding as self-projective Being towards its ownmost potentiality-for-Being. This potentiality is that for the sake of which any Dasein is as it is. In each case Dasein has already compared itself, in its Being, with a possibility of itself. Being-free for one's ownmost potentiality-for- Being, and therewith for the possibility of authenticity and inauthenticity, is shown, with a primordial, elemental concreteness, in anxiety. But ontologically, Being towards one's ownmost potentiality-for-Being means that in each case Dasein is already ahead of itself [ihm selbst . . .  vorweg] in its Being. Dasein is always 'beyond itself' ["über sich hinaus"), not as a way of behaving towards other entities which it is not, but as Being towards the potentiality-for-Being which it is itself. This structure of Being, which belongs to the essential 'is an issue', we shall denote as Dasein's "Being-ahead-of-itself".
But this structure pertains to the whole of Dasein's constitution. "Being-ahead-of-itself" does not signify anything like an isolated tendency in a worldless 'subject', but characterizes Being-in-the-world. To Being-in-the-world, however, belongs the fact that it has been delivered over to itself that it has in each case already been thrown into a world. The abandonment of Dasein to itself is shown with primordial concreteness in anxiety. "Being-ahead-of-itself" means, if we grasp it more fully, "ahead-of-itself-in-already-being-in-a-world". As soon as this essentially unitary structure is seen as a phenomenon, what we have set forth earlier in our analysis of worldhood also becomes plain. The upshot of that analysis was that the referential totality of significance (which as such is constitutive for worldhood) has been 'tied up' with a "for-the-sake-of-which", The fact that this referential totality of the manifold relations of the 'in-order-to' has been bound up with that which is an issue for Dasein, does not signify that a 'world' of Objects which is present-at-hand has been welded together with a subject. It is rather the phenomenal expression of the fact that the constitution of Dasein, whose totality is now brought out explicitly as aheadof- itself-in-Being-already-in . . ., is primordially a whole. To put it otherwise, existing is always factical. EXistentiality is essentially determined by facticity.
Furthermore, Dasein's factical existing is not only generally and without further differentiation a thrown potentiality-for-Being-in-the-world; it is