Apostolidis was born in
Athens in 1924. His father was Heracles N. Apostolidis, who was a journalist, chief editor in several newspaper agencies, head of
Encyclopaedia of Pyrsos publishing, head of the National Library (1945–1959) and creator of the first greek
Poetry and Short Stories Anthology. His mother, Elpiniki, was a teacher. After primary school, he attended Varvakeios High School (1935–1941), where on 28 October 1941 he organized a student protest. Apostolidis participated in the march on 3 December 1944 with
EAM followers that was banned by the Papandreou government,. From 1945, Apostolidis studied in the department of History and Archaeology of the
University of Athens, but was forced to suspend his studies in order to pay his duties in the
Greek Army during the
Civil War, where he participated as
Second lieutenant of the National Army. Living so close with destruction and death, Apostolidis stated that he swore to himself not to shoot a single bullet, and to record what he was going through for two and a half years in Grammos,
Vitsi and during the cleansing operations of Roumeli and the
Peloponnese. As soon as he was released from his duties, he published
Pyramid 67, a novel about the Civil War. He was initially dismissed as an author, labeled a "second rank nationalist"
. In 1950 he completed his studies and started teaching Ancient and Modern Greek, History and Latin in private high schools of Athens. He emerged as a writer in 1944, with the publishing of the essay "Time of Being" in
Grammata periodical. A year later, he issued his first essay collection
Three stations in a Course. He collaborated with several newspapers and periodicals of Athens as an editor of
Eleutheria, Niki, Eikones, Gnoseis, Neoteron Lexicon Iliou, Aneksartitos Typos and other publications, as well as book critic in
Grammata, Fititiki Foni, Deltion tou Vivliou, Kiklos, Kochlias, Nea Estia, Neoi Rithmoi, Nees Ikones, Ethnos, Ethnikos Kirikas, Epoptia and
Nea Koinoniologia. Starting in 1951, he worked as chief editor and critic in the periodical
Our Aeon, and in 1952, established with his father the periodical
Modern Greek. In the latter he exercised intense criticism "against the political and literary establishment", and particularly against the "Generation of the '30s", accusing them of "spiritual and ethical inadequacy". For this posture of him, author
M. Karagatsis sued him and his father for reasons of copyright. In 1966 Apostolidis started publishing in
Modern Greek serialised fragments from the diary of
Ioannis Metaxas accompanied with his own sarcastic commentary. These publishes caused the reaction of the newly established organisation
4th of August Party, and its leader
Konstantinos Pleuris, who attacked Apostolidis from the organisation's newspaper. After Apostolidis's response Pleuris filed a lawsuit against him. The trial took place after the Coup of 21 April 1967, and the establishment of military dictatorship, and so the circulation of Modern Greek stopped, which until then had published five articles related to the first two volumes of Metaxas's diary. Apostolidis lost the trial in the first instance court, but in the
Court of Appeal he stated that it was not his intention to offend the members of the 4th of August Party and the lawsuit was dismissed. == Politics ==