The history of Marxism in Brazil has been marked by discord. This tension makes sense considering that historical materialism developed in a European social environment, contrasted, to some extent, with the Asian context. The problem is, therefore, twofold. First, the theory proved incapable of reflecting the specificity of a particular social formation. The latter, differing significantly from the reality in which Marxism emerged, comes to be seen as “eccentric.” Moreover, Marxist theory seeks to transform reality, which contributes to a confusion between thought and politics. In the same sense, Marxism cannot be self-sufficient, because it must respond to the challenges of the environment in which it is inserted, contributing, in turn, to its contact with other intellectual and political traditions. Marxist thought in Brazil can be divided into three main historical moments: the first was marked by the preponderant influence of communism, from the 1920s to the 1964 coup; the second was characterized by the emergence in the mid-1950s of a New Left; and the third was the debate regarding democracy, which has gained momentum since the end of the country’s most recent authoritarian period in 1985. Throughout this extended historical period, Brazilian Marxists have been preoccupied with a recurring concern: How will the Bourgeois Revolution happen in Brazil? The periodization is not exact, with trends often overlapping and fostering an evolving political culture. In this way, through opportunities seized and missed, the Left—whose main theoretical reference today is still Marxism—penetrated Brazilian society and became an important part of national life.