Paulo Freire was a Brazilian educator who developed theories of critical pedagogy and popular education. He criticized the "banking model" of education, where students are treated as empty vessels to be filled by the teacher. Instead, he advocated for dialogic education that stimulates creativity and critical thinking. Freire believed that education should promote liberation and empowerment, not domination. He saw literacy and learning as political acts and emphasized the importance of dialogue in the student-teacher relationship.