You have chosen 'Function and Concept' by Gottlob Frege, 'A General Principle to Explain Laws of Nature' by Gottfried Leibniz and 'On the Syllogism IV' by Augustus De Morgan
start again | choose another area for these texts | all the ideas for this combination of texts| All the ideas for Natural Reality, or select a subheading: |
| A. | Classical Physics | |
| B. | Modern Physics | |
| C. | Space | |
| D. | Time | |
| E. | Cosmology | |
| F. | Chemistry | |
| G. | Biology |