|Abstract: non-representational - abstract concept, expression of something non-objective - how to demarcate from concrete objects? How to differentiate between abstract entities and concepts, ultimately words.|
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Abstractness/Foucault: In its simple being as an idea or as a picture or as another associated or substituted perception, the characteristic element is not a sign.
It is only on the condition that it manifests, among other things, the relationship that connects it with what it designates. The representation must be represented in it. (> Logic of Port Royal)
No secret return to the ternary system, split duplicated representation.
The representation is always perpendicular to itself: at the same time indication and appearance, relation to the object and manifestation of itself.
The abstract idea means the concrete perception from which it has been formed. (Condillac).
The general idea is only a special idea, which serves the other signs as signs (Berkeley).
The representations are signs of the perceptions from which they have emerged. (Hume, Condillac)
The Order of Things: An Archaeology of Human Sciences 1994
Archäologie des Wissens Frankfurt/M. 1981