You have chosen 'Nominalism and Substitutional Quantifiers' by Ruth Barcan Marcus, 'Through the Looking Glass' by Lewis Carroll (C.Dodgson) and 'Of Organum or Ars Magna of Thinking' by Gottfried Leibniz
start again | choose another area for these texts | all the ideas for this combination of texts| All the ideas for Natural Theory, or select a subheading: |
| A. | Speculations on Nature | |
| B. | Natural Kinds | |
| C. | Causation | |
| D. | Laws of Nature |