Combining Texts

You have chosen 'The Concept of Logical Consequence' by Alfred Tarski, 'On 'Insolubilia' and their solution' by Bertrand Russell and 'What is an Idea?' by Gottfried Leibniz

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