Eric J. Hobsbawm, Theodor W. Adorno, Erich Fromm, Anatol Rapoport, Jürgen Habermas, Herbert Marcuse, Ágnes Heller, Charles Frankel, Roger Garaudy, Raymond Aron, Robert C. Tucker, Jean Hyppolite, Jindřich Zelený, Mihailo Markovic, Abdallah Laroui, Cesare Luporini, Adam Schlaff, Evgueni Kamenov, Costin Murgescu, T.I. Ojzerman, Josef Szigeti, H.M.A. Onitiri