Structural anthropology is a school of anthropology based on Claude Lévi-Strauss' idea that immutable deep structures exist in all cultures, and consequently, that all cultural practices have homologous counterparts in other cultures, essentially that all cultures are equitable.
Lévi-Strauss' approach arose in large part from dialectics expounded on by Marx and Hegel, though dialectics (as a concept) dates back to Ancient Greek philosophy. Hegel explains that every situation presents two opposing things and their resolution; he called these "thesis, antithesis, and synthesis." Lévi-Strauss argued that cultures also have this structure. He showed, for example, how opposing ideas would fight and were resolved to establish the rules of marriage, mythology and ritual. This approach, he felt, made for fresh new ideas. He stated:
Only those who practice structural analysis are aware of what they are actually trying to do: that is, to reunite perspectives that the "narrow" scientific outlook of recent centuries believed to be mutually exclusive: sensibility and intellect, quality and quantity, the concrete and the geometrical, or as we say today, the "etic" and the "emic."