You have chosen 'Facts and Propositions' by Frank P. Ramsey, 'Axiomatic Theories of Truth (2005 ver)' by Volker Halbach and 'Letters to Antoine Arnauld' by Ren Descartes
start again | choose another area for these texts | all the ideas for this combination of texts| All the ideas for Science, or select a subheading: |
| A. | Basis of Science | |
| B. | Scientific Theories | |
| C. | Induction | |
| D. | Explanation |