Héctor-Neri Castañeda

Following his brief stay at Duke University, Castañeda's first full-time academic appointment was as a professor in the Philosophy department at Wayne State University, where he taught from 1957–1969. It was there that he founded the philosophical journal Noûs, in 1967. From 1962–1963, he was also a visiting professor at the University of Texas at Austin. He was granted a fellowship from the Guggenheim Foundation between 1967 and 1968.

He moved to Indiana University in 1969, and eventually became the Mahlon Powell Professor of Philosophy as well as that university's first Dean of Latino Affairs, a position he held from 1978–1981. He was a fellow at the Center for Advanced Study in the Behavioral Sciences from 1981–1982.

In addition to his other academic honors, Castañeda received grants from the National Endowment for the Humanities, the Andrew W. Mellon Foundation, and the National Science Foundation. He served as President of the American Philosophical Association Central Division from 1979–1980, and was named to the American Academy of Arts and Sciences in 1990. Castañeda was awarded the Presidential Medal of Honor by the Government of Guatemala in 1991.

Castañeda started from the fact that thoughts about real things in the world are of a fundamentally similar nature to thoughts about things in the imagination, it is still a thought, and from there he hypothesized an entire realm of abstract objects that included both the real and the imagined. He referred to these objects collectively as guises, and argued that they could be treated as sets of properties. He went on to analyse all of language and perception in terms of these guises, ultimately developing an entire metaphysics based on them.

One noted critic of Guise theory was Plantinga, who developed his own rival theory involving a realm of abstract objects. Both theories were in fact based on even earlier work developed by Ernst Mally in 1912. They differed, however, in the details of their metaphysical system and in how they regarded the basic building blocks of their respective systems.

• On the Semantics of the Ought-to-Do, Synthese, 21, No. 3/4, Semantics of Natural Language, 1970, pp. 449–468.
• Intentions and the Structure of Intending, The Journal of Philosophy, 68, 1971, pp. 453–466.
• The Structure of Morality, Springfield: Thomas, 1974.
• Thinking and Doing. The Philosophical Foundations of Institutions, Dordrecht, Reidel, 1975.
• On Philosophical Method, Detroit: Nous publications no. 1, 1980.
• The Paradoxes of Deontic Logic: The Simplest Solution to All of Them in One Fell Swoop, in Risto Hilpinen (ed.), New Studies in Deontic Logic, Dordrecht: Reidel, 1981, pp. 37–85.
• Thinking, Language and Experience, Minneapolis: University of Minnesota Press, 1989.
• The Phenomeno-Logic of the I. Essays on Self-consciousness, edited by James G. Hart and Tomis Kapitan, Bloomington: Indiana University Press, 1999.

• Jacobi, Klaus & Pape, Helmut (eds.). Thinking and the Structure of the World. Hector-Neri Castañeda's Epistemic Ontology Presented and Criticized / Das Denken und die Struktur der Welt. Hector-Neri Castañeda's epistemische Ontologie in Darstellung und Kritik, Berlin: Walter de Gruyter, 1990.
• Orilia, Francesco & Rapaport, William J. (eds.), Thought, Language, and Ontology. Essays in Memory of Hector-Neri Castañeda, Dordrecht: Reidel, 1998.
• Tomberlin, James E. (ed.), Agent, Language, and the Structure of the World. Essays Presented to Hector-Neri Castañeda, with His Replies, Indianapolis: Hackett, 1983.
• Palma A, Castañeda and his guises, Walter de Gruyter, Berlin and Boston, 2014