You have chosen 'The Sign of Four' by Arthur Conan Doyle, 'Rules for the Direction of the Mind' by Ren Descartes and 'Letters to Fardella' by Gottfried Leibniz
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 |