Kotzias was born in Athens on January 27, 1925, to a family that hailed from Dimitsana, Arcadia. He studied Law at the University of Athens but chose to work as a literary critic in various newspapers.
During the German occupation of Greece (1941-1944), Kotzias joined the resistance. In 1953, he published his first story "Πολιορκία" ("Siege"). Several other stories and novels followed. Later, he was persecuted by the Junta (1967-1974) for his democratic beliefs expressed in his writings.
Kotzias wrote much about corruption in high places. He also wrote historical documentaries and translated well-known writers such as Dostoyevski, Kessler, Kafka, etc.
His literary works
- Πολιορκία - Siege (1953)
- Μια σκοτεινή υπόθεση - A shady affair (1954)
- Ο Εωσφόρος - Lucifer (1959)
- Η απόπειρα - The attempt (1964)
- Ο γενναίος Τηλέμαχος - Brave Telemachus (1972)
- Αντιποίησις αρχής - Usurping Authority (1985)
- Φανταστική περιπέτεια - An imaginary adventure (1985)
- Ιαγουάρος- Jaguar (1987)
- Η μηχανή - The machine (1989)
- Ο πυγμάχος - The Boxer (1991)
- Το σοκάκι - The narrow road (1993)