Full member of the Academy of Athens since 2022 and Emeritus Professor of Linguistics at the National and Kapodistrian University of Athens. He is Honorary Professor at the University of Bucharest and Honorary Doctor of the Democritus University of Thrace. He graduated (1971) from the School of Philosophy at the University of Athens and went on to pursue graduate studies at the University of Heidelberg. In 1976, he was awarded a doctorate from the Faculty of Philosophy at the University of Cologne. He served as a compiler for the Historical Dictionary of the Academy of Athens (1977-1983) and full professor (1983-1993) at the Faculty of Philosophy of the University of Crete, from which he was appointed to the National and Kapodistrian University of Athens. He has taught as a visiting professor at the universities of Münster, Athens, Cyprus, Thrace, Granada, and Frederick University in Limassol. He served as President of the Board of Governors of the European Schools. He is a Grand Archon-Teacher of the Nation of the ancient Patriarchate of Alexandria (2018) and a lifetime member of the Rizarios Foundation (2013). He is, or has been, a member of the editorial board of 16 academic journals, including Glossologia and the Journal of Greek Linguistics. Of the 15 books he has authored, 5 are collected volumes: Modern Greek Language: Essays on Language, Literature and Style (1992, 3rd ed. 1999), Glossalgimata: Studies on the Greek Language (1997), Linguistic and Literary Criticism (1998), Cretological Studies: Language-Literature-Culture (Herakleion: Crete University Press, 2001), and The Language and Style of Modern Greek Writers (2021). The books Language and Education: Issues in the Teaching of Modern Greek (1994) and The Language Issue (2019) break new ground in many respects. His original research papers, written in Greek, German, English and French, number 200 out of a total of 620 publications. The crowning achievement of his scholarly career is the Practical Dictionary of the Modern Greek Language (Athens 2014, 1,819 pages), the design and scientific coordination of which were unanimously entrusted to him in 2003 by the Plenary Session of the Academy of Athens.