|Realism, philosophy: realism is a collective term for theories which, in principle, believe that it is possible for us to acquire knowledge about objects of the external world that is independent from us as perceptual subjects. A strong realism typically represents the thesis that it would make sense to even create hypotheses about basically unknowable objects. See also metaphysical realism, internal realism, universal realism, constructivism.|
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|Chisholm II = Klaus Hedwig Brentano und Kopernikus in Philosophische Ausätze zu Ehren Roderick M. Chisholm Marian David/Leopold Stubenberg (Hg), Amsterdam 1986
Chisholm II 257
Definition Reism/Brentano: his reistic ontology (late work) traces the being back to the "thing", the "res". Then abstractions, universals, negations, facts, forms, and fictions are not "things" in the strict sense.
Already for Thomas Aquinas and Duns Scotus "res" is a transcendental concept, which is convertible with the being (ens).
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