You have chosen 'Classical Cosmology (frags)' by T.M. Robinson, 'Commentary on 'Physics'' by Walter Burley and 'On Plural Reference and Set Theory' by Helen Cartwright
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| A. | A Priori Knowledge | |
| B. | Perception | |
| C. | Rationalism | |
| D. | Empiricism | |
| E. | Direct Knowledge |