Combining Texts

You have chosen 'Letters to Remond de Montmort' by Gottfried Leibniz, 'Nature and Observability of Causal Relations' by Curt Ducasse and 'On the Cosmos (lost)' by Philolaus

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All the ideas for Metaethics, or select a subheading:
      A. Ethics Foundations
      B. Value
      C. The Good