Hierarchy classification:

1. top of the aat hierarchies
2. Associated Concepts Facet
3. Associated Concepts (hierarchy name)
4. philosophical concepts
5. [philosophical movements and attitudes]

Anotations

Scope note:

In philosophy, a theory that affirms that the basic substance of the world is matter and that the world is known primarily through material forms and processes. It is opposed to idealism, the theory holding that spiritual and ideal is of central importance in the interpretation of experience.