Huizinga, Johan
Abellán, Joaquín
Miller, David
Rivero, Fernando
Kaku, Michio
Jeremy Scahill
Daniel Serrano
Eric J. Hobsbawm
Frale, Barbara
Marx, Karl
R. L. Trask; Bill Mayblin
Ricart I Masip, Marta; Saurí I Saula, Enric