You have chosen 'On Liberty' by John Stuart Mill, 'Rules for the Direction of the Mind' by Ren Descartes and 'New System and Explanation of New System' 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 |