The document discusses the four fields of anthropology and how they relate to the study of culture. It defines each field as the comparative study of a particular aspect of human societies: cultural anthropology studies cultures, physical anthropology studies human evolution and variation, linguistics studies language, and archaeology studies past cultures through material remains. The document emphasizes that anthropology takes a holistic approach by examining how all aspects of a culture and society fit together, and uses a comparative method to understand both similarities and differences between cultures.