You have chosen 'New System and Explanation of New System' by Gottfried Leibniz, 'Preface to 'De Revolutionibus'' by Andreas Osiander and 'On the Algebra of Logic' by Charles Sanders Peirce
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| A. | A Priori Knowledge | |
| B. | Perception | |
| C. | Rationalism | |
| D. | Empiricism | |
| E. | Direct Knowledge |