Combining Texts

You have chosen 'Academica' by M. Tullius Cicero, 'An Argument for the Identity Theory' by David Lewis and 'Counting and the Natural Numbers' by Jeffrey H. Sicha

start again     |    choose another area for these texts     |    all the ideas for this combination of texts
All the ideas for Existence, or select a subheading:
      A. Nature of Existence
      B. Change in Existence
      C. Structure of Existence
      D. Theories of Reality
      E. Categories