Attributes are at the things to which they are attributed. Existence, then, is in a broad sense an attribute of existing items despite adding nothing to the quiddity of the thing to which it is attributed apart from its capacity to have a quiddity.
Footnotes to Plato from the foothills of the Superstition Mountains
Attributes are at the things to which they are attributed. Existence, then, is in a broad sense an attribute of existing items despite adding nothing to the quiddity of the thing to which it is attributed apart from its capacity to have a quiddity.