You have chosen 'What is Logic?st1=Ian Hacking' by , 'Axiomatic Theories of Truth (2013 ver)' by Halbach,V/Leigh,G.E. and 'Letters to Voetius' by Ren Descartes
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 |