Subclass BD Speculative philosophy

General philosophical works - Speculative philosophy [BD]|BD10-41

Metaphysics - Speculative philosophy [BD]|BD95-131

Epistemology. Theory of knowledge - Speculative philosophy [BD]|BD143-237

Methodology - Speculative philosophy [BD]|BD240-260

Ontology Including being, the soul, life, death - Speculative philosophy [BD]|BD300-450

Cosmology Including teleology, space and time, structure of matter, plurality of worlds - Speculative philosophy [BD]|BD493-701