Combining Texts

You have chosen 'Survival and Identity, with postscript' by David Lewis, 'De Mundo Praesenti' by Gottfried Leibniz and 'Elements of Mathematical Logic' by Jan Lukasiewicz

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All the ideas for Religion, or select a subheading:
      A. Polytheistic Religion
      B. Monotheistic Religion
      C. Spiritual Disciplines
      D. Religious Issues