What are the motifs in Pedagogy of the Oppressed by Paulo Freire?

Freire tends to see things as dual in nature. He identifies systems of dual elements that work together to form a process or dynamic system. The oppressor and the oppressed are two halves of a whole, two interdependent parts of a system that cannot exist without each other. The oppressed themselves become dual in nature, as they internalize the oppressor within themselves, and this dualism becomes a conflict. The oppressed want freedom, since it is a fundamentally human drive, but they also fear freedom.