You have chosen 'On Plural Reference and Set Theory' by Helen Cartwright, 'Words without Objects' by Henry Laycock and 'Fourfold Root of Princ of Sufficient Reason' by Arthur Schopenhauer
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| A. | Classical Physics | |
| B. | Modern Physics | |
| C. | Space | |
| D. | Time | |
| E. | Cosmology | |
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