The Meta-Ethical Decision Tree

A Cartography of Moral Theories

Navigate the landscape of moral philosophy from foundational questions about the nature of ethics to practical questions about how we ought to live. Click "Show details" to explore deeper. This was made with Claude Sonnet 4.5.

Part I: Meta-Ethics

"What is the nature of morality itself? Are there moral truths, and if so, what grounds them?"

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Part II: Normative Ethics

"Given our meta-ethical commitments, what principles should guide our actions?"

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Guide to the Landscape

Understanding Meta-Ethical Distinctions:

  • • Cognitivism vs. Non-Cognitivism: The most fundamental divide—whether moral statements are the kinds of things that can be true or false at all.
  • • Realism vs. Anti-Realism: If moral statements can be true, do they describe mind-independent facts?
  • • Naturalism vs. Non-Naturalism: If there are objective moral facts, are they part of the natural world, or something else entirely?

Important Considerations:

  • • Your meta-ethical views constrain but don't fully determine your normative commitments.
  • • Most people's moral thinking combines elements from multiple theories.
  • • These categories represent idealized positions. Historical philosophers often resist clean categorization.

This decision tree synthesizes the major positions in meta-ethics and normative ethics.

For further reading, consult the Stanford Encyclopedia of Philosophy or the primary sources cited.