You have chosen 'Contrib to Critique of Hegel's Phil of Right' by Karl Marx, 'On the Syllogism IV' by Augustus De Morgan and 'On the Happy Life' by Seneca the Younger
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 |