Combining Texts

You have chosen 'Sententia on 'De Caelo'' by Thomas Aquinas, 'On boundary numbers and domains of sets' by Ernst Zermelo and 'The Problem of Knowledge' by A.J. Ayer

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All the ideas for Objects, or select a subheading:
      A. Existence of Objects
      B. Unity of Objects
      C. Structure of Objects
      D. Essence of Objects
      E. Objects over Time
      F. Identity among Objects