«A Critique of Ethical Egoism: Nietzsche in Max Horkheimer’s Early Thought», in: Critical Theory: Tradition and Perspectives, edited by Konstantine Kavoulakos, Nissos Publishers, Athens 2003.
«Albert Camus: the absurd as a tragic affirmation of life», Preface to: Leto Katakouzenos, Conversations with Albert Camus, Aggelos & Leto Katakouzenos Foundation, Athens 2011