You have chosen 'Counterpart theory and Quant. Modal Logic' by David Lewis, 'A Realistic Theory of Categories' by Roderick Chisholm and 'Structure and Nature' by Willard Quine
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| A. | A Priori Knowledge | |
| B. | Perception | |
| C. | Rationalism | |
| D. | Empiricism | |
| E. | Direct Knowledge |