187 I. 5
Being and Time

so as to indicate that here it is not a matter of perceptually tracking down and inspecting a point called the "Self", but rather one of seizing upon the full disclosedness of Being-in-the-world throughout all the constitutive items which are essential to it, and doing so with understanding. In existing, entities sight 'themselves' [sichtet "sich"] only in so far as they have become transparent to themselves with equal primordiality in those items which are constitutive for their existence: their Being-alongside the world and their Being-with Others.

On the other hand, Dasein's opaqueness [Undurchsichtigkeit] is not rooted primarily and solely in 'egocentric' self-deceptions; it is rooted just as much in lack of acquaintance with the world.

We must, to be sure, guard against a misunderstanding of the expression [147] 'sight'. It corresponds to the "clearedness" [Gelichtetheit] which we took as characterizing the disclosedness of the "there". 'Seeing' does not mean just perceiving with the bodily eyes, but neither does it mean pure non-sensory awareness of something present-at-hand in its presence-at-hand. In giving an existential signification to "sight", we have merely drawn upon the peculiar feature of seeing, that it lets entities which are accessible to it be encountered unconcealedly in themselves. Of course, every 'sense' does this within that domain of discovery which is genuinely its own. But from the beginning onwards the tradition of philosophy has been oriented primarily towards 'seeing' as a way of access to entities and to Being. To keep the connection with this tradition, we may formalize "sight" and "seeing" enough to obtain therewith a universal term for characterizing any access to entities or to Being, as access in general.

By showing how all sight is grounded primarily in understanding (the circumspection of concern is understanding as common sense [Verständigkeit]), we have deprived pure intuition [Anschauen] of its priority, which corresponds noetically to the priority of the present-at-hand in traditional ontology. 'Intuition' and 'thinking' are both derivatives of understanding, and already rather remote ones. Even the phenomenological 'intuition of essences' ["Wesensschau"] is grounded in existential understanding. We can decide about this kind of seeing only if we have obtained explicit conceptions of Being and of the structure of Being, such as only phenomena in the phenomenological sense can become.

The disclosedness of the "there" in understanding is itself a way of Dasein's potentiality-for-Being. In the way in which its Being is projected both upon the "for-the-sake-of-which" and upon significance (the world), there lies the disclosedness of Being in general. Understanding of Being has already been taken for granted in projecting upon possibilities. In projection, Being is understood, though not ontologically conceived. An

Being and Time (M&R) by Martin Heidegger