Combining Texts

You have chosen 'Abstraction Reconsidered' by Peter Geach, 'What is the Basis of Moral Obligation?' by H.A. Prichard and 'Sense Data and the Percept Theory' by Roderick Firth

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All the ideas for Reason, or select a subheading:
      A. Nature of Reason
      B. Laws of Thought
      C. Styles of Reason
      D. Definition
      E. Argument
      F. Fallacies