The document outlines the principles of Marxist criticism, which is rooted in the ideas of Karl Marx and Friedrich Engels, emphasizing the socio-economic context of literature as a reflection of class struggles and societal conditions. It discusses various streams of Marxist criticism, including Leninist, Engelsian, and Althusserian perspectives, highlighting their impact on literature and the significance of social class in shaping authors' work. Marxist critics analyze literary content and form in relation to socio-political contexts, asserting that economic conditions influence artistic expression.