Interiority / Exteriority (Inner and Outer)
Hegel (Logic of Essence, third essential relation)
The highest of the three essential relations (after whole/parts and force/expression). Inner and outer are not separate domains but constitute each other reciprocally: the inner IS nothing without its outer (a thought never expressed is no thought at all), the outer IS nothing without its inner (an action without intention is mere twitching). "What is inward is also outward" — this is not a banal assertion but the insight that both have *the same content*, only in different form.
Origin
Traditionally: separation (inside vs. outside, soul vs. body). In Hegel: reciprocal constitution — the separation is only the starting point, which sublates itself.
In Hegel
Enc. §§138–141; Science of Logic, Vol. 2, Appearance
Cross-references
Wesen [Essence] · Appearance · Actuality · Kraft/Äußerung · Korrespondenzproblem
Der übergang zur wirklichkeit
If inner and outer are fully and reciprocally constituted, their distinction is sublated — we have arrived at actuality (Chapter 7).
Im buch
Chap. 6.9, 7.2