Full Idea
The fundamental thought of my thinking is precisely that Being, or the manifestation of Being, needs human beings and that, vice versa, human beings are only human beings if they are standing in the manifestation of Being.
Gist of Idea
I say the manifestation of Being needs humans, and humans only exist as reflected in Being
Source
Martin Heidegger (Martin Heidegger in conversation [1969], p.82), quoted by Richard Polt - Heidegger: an introduction 5 'Signs'
Book Reference
Polt,Richard: 'Heidegger: an introduction' [Routledge 2003], p.118
A Reaction
I don't think I understand the second half of this, but I sense some sort of intuition that the consciousness of humans 'enlarges' Being, or bestows an identity on it, or some such thing.