Like his siblings Insa and Peer, Jens Halfwassen was born in Bergisch Gladbach to Helga Halfwassen, née Becker, and Heinz Halfwassen (born 1929),4 a businessman, board member of Zanders Feinpapiere AG, councillor and managing director of the Gartensiedlung Gronauerwald. He attended the Nicolaus-Cusanus-Gymnasium there from 1969 to 1978. In April 1975, Halfwassen appeared as a 16-year-old contestant in the quiz programme Der große Preis with Wim Thoelke on the subject of ‘Louis XIV’. From 1978 to 1985, he studied philosophy, history, antiquity and education at the University of Cologne, a period that shaped his entire academic education. Halfwassen received a doctoral scholarship from the German National Academic Foundation. In 1989, he was honoured with the dissertation Der Aufstieg zum Einen. Untersuchungen zu Platon und Plotin summa cum laude. From 1990 Halfwassen was a research assistant to Klaus Düsing. In 1995, he completed his habilitation with ‘Hegel und der spätantike Neuplatonismus. Investigations into the Metaphysics of the One and the Nous in Hegel's Speculative and Historical Interpretation’. He was a senior assistant and private lecturer at the University of Cologne until 1997.
Halfwassen was Heisenberg Professor of the German Research Foundation and Professor of Philosophy at the Ludwig Maximilian University of Munich from 1997 to 1999. During this time, he spent a year as a research fellow at the Eberhard Karls University of Tübingen. In 1999, he was appointed to a chair in philosophy at the Ruprecht Karls University of Heidelberg. Since then he has been Director of the Philosophy Department there. Together with Matthias Baltes and others, he founded the Academia Platonica Septima Monasteriensis in 1999. Two years later, he established the Hans-Georg Gadamer Endowed Professorship for Humanities at the University of Heidelberg, which he continuously supervised and organised. In 1999, he became a member of the Hegel Commission of the North Rhine-Westphalian Academy of Sciences and Humanities, a member of the advisory board of the Gesellschaft für antike Philosophie (Society for Ancient Philosophy) and a member of the advisory board of the Internationalen Schelling-Gesellschaft (International Schelling Society). From 2001 to 2007, Halfwassen was a member of the Senate Committee for Research Affairs at Heidelberg University. Since 2007, he has been a member of the Board of Trustees of the Karl Jaspers Foundation in Basel. In the same year, he was elected Senior Fellow at the Collegium Budapest. He was a Fellow there from October 2009 to 2010. In 2012, he became head of the Karl Jaspers Centre at the Heidelberg Academy of Sciences and Humanities, of which he also became a full member in 2012. Since March 2014, he has been a Fellow of the Marsilius-Kolleg at the University of Heidelberg and has been working on the philosophical redefinition of the relationship between matter, determinacy and freedom. He was awarded the Rudolf Meimberg Prize of the Academy of Sciences and Literature (2003) and an honorary doctorate in philosophy from the State University of Athens (2014).
Halfwassen was co-editor of the series Quellen und Studien zur Philosophie, De Gruyter publishing, and of the journal Philosophische Rundschau, Mohr Siebeck publication. He has also worked as a reviewer for the German Research Foundation, the Alexander von Humboldt Foundation, the Fritz Thyssen Foundation, the Union of German Academies of Sciences and Humanities, the Volkswagen Foundation, the DAAD and the German National Academic Foundation, of which he has been a liaison lecturer since 2002. Among other things, he recently worked on the commentary for a bilingual edition of the testimonies to Plato's ‘Unwritten Doctrines’.5
"Zum Tod des Philosophen Jens Halfwassen". FAZ.NET (in German). 2020-02-19. Retrieved 2025-01-24. https://www.faz.net/aktuell/feuilleton/zum-tod-des-philosophen-jens-halfwassen-16640543.html ↩
"Heidelberger Metaphysiker: Jens Halfwassen ist tot". Rhein-Neckar-Zeitung (in German). Retrieved 2025-01-24. https://www.rnz.de/kultur/kultur-regional_artikel,-Heidelberger-Metaphysiker-Jens-Halfwassen-ist-tot-_arid,500887.html ↩
Hänni, Julia (2021-02-12). "Jens Halfwassen: Was Platon mit der modernen Physik verbindet". Neue Zürcher Zeitung (in Swiss High German). ISSN 0376-6829. Retrieved 2025-01-24. https://www.nzz.ch/feuilleton/jens-halfwassen-was-platon-mit-der-modernen-physik-verbindet-ld.1600683 ↩
Walter Habel (Hrsg.): Wer ist wer? Das deutsche Who’s who. 24. Ausgabe. Schmidt-Römhild, Lübeck 1985, ISBN 3-7950-2005-0, S. 445. /w/index.php?title=Wer_ist_wer%3F&action=edit&redlink=1 ↩
Otfried Höffe: Jens Halfwassen (16. 11. 1958–14. 2. 2020). In: Jahrbuch der Heidelberger Akademie der Wissenschaften für 2020. Heidelberg 2021, S. 121–125 (online). /wiki/Otfried_H%C3%B6ffe ↩