Noam Chomsky
Antonio Gramsci
Jafar Suryomenggolo, Mario Ivan Lopez
Soe Hok Gie
Thomas Piketty
George Orwell
Eko Prasetyo
Mahfud Ikhwan
Erich Fromm
Muhammad Iqbal
Evelyn Reed
José Carlos Mariátegui
Aleksandr Solzhenitsyn
Kevin W. Fogg
Ellen Meiksins Wood
Lydia Cacho
Leon Trotsky
Kurt Vonnegut
Frederick Copleston
Aristoteles
Reuben Osborn
Aria Wiratma Yudhistira
Arthur Schopenhauer
Rob Wallace
Ester Lianawati
Vijay Prashad
Tedjabayu Sudjojono
Onghokham
Slavoj Žižek
Cinzia Arruzza, Nancy Fraser, Tithi Bhattacharya