Combining Texts

You have chosen 'Elements of Mathematical Logic' by Jan Lukasiewicz, 'On Nature Itself (De Ipsa Natura)' by Gottfried Leibniz and 'The Barcan Formula and Metaphysics' by Ori Simchen

start again     |    choose another area for these texts     |    all the ideas for this combination of texts
All the ideas for Science, or select a subheading:
      A. Basis of Science
      B. Scientific Theories
      C. Induction
      D. Explanation