You have chosen 'Summa totius logicae' by William of Ockham, 'Commentary on 'Posterior Analytics' by Jonathan Barnes and 'Criterion of Validity in Reasoning' by Charles Sanders Peirce
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 |