In memoriam: Risto Hilpinen 1943-2026

Emeritus Professor Risto Hilpinen died after a long illness at his home in Miami on October 9, 2026. Hilpinen was one of the most internationally renowned Finnish philosophers.

Hilpinen became acquainted with the classics of philosophy already during his school years. He was born and spent his childhood in Lahti and studied at the University of Helsinki.

Hilpinen began his professional career as a philosopher in 1965 as an assistant in Jyväskylä. Soon he joined the research group led by Professor Jaakko Hintikka, whose members also included Ilkka Niiniluoto, Juhani Pietarinen, and Raimo Tuomela. Hilpinen earned his doctorate in inductive logic, and he was among the world's foremost experts on deontic logic, a field created by G. H. von Wright and further developed by Jaakko Hintikka.

Hilpinen was appointed Professor of Theoretical Philosophy at the University of Turku in 1972, having previously served as Professor of Philosophy at the University of Jyväskylä from 1970 to 1971. His solid grounding in logic gave him the opportunity to expand his philosophical research into other areas requiring demanding conceptual analysis, such as epistemology and the philosophy of science. His studies on the theory of artifacts attracted the attention of philosophers of art. Hilpinen was also one of the leading experts on the philosophy of C. S. Peirce.

Hilpinen's years in Turku were marked by internationality. Researchers and students of philosophy at the University of Turku had opportunities to hear presentations by some of the world's leading philosophers. In 1998 he moved permanently to Miami, where he was known as an encouraging and sharp-minded colleague.

As a teacher, Hilpinen was inspiring. He listened to his students and knew how to support their thinking, often with observations seasoned by humor. Many of Hilpinen's Finnish students became professors, and not only in philosophy.

Hilpinen knew how to be a courteous gentleman. His broad general knowledge ensured that no one was ever bored in his company. Artistically gifted and fond of cats, Hilpinen enjoyed photography and oil painting, and he was an unsurpassed authority on the works of P. G. Wodehouse.

Risto Hilpinen is survived by his wife Anneli, two children and their families, three grandchildren, four great-grandchildren, his older sister and her family, his younger brother and his family, and a large number of colleagues and former students who mourn him.

Olli Koistinen
Juha Räikkä