You have chosen 'On the Nature of the Universe' by Lucretius, 'Dialogue on human freedom and origin of evil' by Gottfried Leibniz and 'Trees, Terms and Truth' by George Engelbretsen
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 |