• Dagfinn Kåre Føllesdal (C.I. Lewis Professor of Philosophy Emeritus at Stanford University, Professor of Philosophy Emeritus at University of Oslo)
• Władysaw Stróżewski (Professor of Philosophy Emeritus at Jagiellonian University in Kraków)
• Jan Hertrich-Woleński (Professor of Philosophy Emeritus at Jagiellonian University in Kraków)
• Krzysztof Ingarden (Professor of Architecture at Andrzej Frycz Modrzewski Krakow University)