Philosopher Dario Antiseri has died at his home in Cesi di Terni after a long illness that had led him to suspend public appearances. Born on January 9, 1940, in Foligno, he attended different European universities after graduating from Perugia University. A pupil of Karl Popper, whose thought he helped spread in Italy, he applied the Austrian epistemologist’s scientific rationalism to various fields of knowledge and spirit. His last work bore a title fully reflecting his research path, "I Dubbi del Viandante" ("The Doubts of the Wayfarer"), characterized by rejection of all dogmatism. This approach drew criticism from some members of the Church, who accused him of relativism—which he vehemently defended: one of his most successful works is titled "Cristiano perché relativista, relativista perché cristiano"" ("Christian Because Relativist, Relativist Because Christian"). He was a great believer in philosophy's educational value rather than its elitism. To demonstrate this, it suffices to recall that he collaborated with Giovanni Reale on one of the most widely read high school history of philosophy curricula. His essay output was considerable, with several of his publications translated into foreign countries such as China and Russia.