Beginning with the distinction between substance and property, this entry compares ontological commitment, dependence, and process views of what the world contains.
1.The question is not only whether, but how
Ordinary language treats many nouns as things: a table, a storm, the number two, a promise. Yet our ability to speak of X does not by itself show that X exists as an independent object. Ontology first asks what a theory commits us to, and how those entities depend on one another.
Substance theories treat certain things as bearers of properties. Process theories take events and change to be more basic. Their disagreement concerns not only a list of entities but the direction of explanation: do processes happen to things, or are things relatively stable patterns in processes?
2.From categories to dependence
Aristotle distinguished substance, quantity, quality, and relation. Spinoza later restricted genuine independence to a single substance. Contemporary metaphysics often recasts the dispute through grounding and dependence, turning ontology from a catalogue into a map of explanatory structure.
3.Major Positions
Substance theory
Relatively stable individuals that bear properties are basic units of explanation.
Process theory
Events, relations, and change are more basic; objects are stable patterns within them.
Lightweight ontology
Many existence questions can be settled by conceptual or linguistic frameworks without deep metaphysical facts.
4.Primary & Further Reading
- Aristotle, Categories and Metaphysics.
- Spinoza, Ethics, Part I.
- Quine, W. V. O., 1948, “On What There Is.”
- Stanford Encyclopedia of Philosophy, “Substance”. ↗
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