You have chosen 'How to Make our Ideas Clear' by Charles Sanders Peirce, 'Rules for the Direction of the Mind' by Ren Descartes and 'Introduction to 'Modality'' by Bob Hale/ Aviv Hoffmann
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| A. | Classical Physics | |
| B. | Modern Physics | |
| C. | Space | |
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| E. | Cosmology | |
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