You have chosen 'Aristotle and Descartes on Matter' by Gottfried Leibniz, 'Certain Physical Essays' by Robert Boyle and 'Causation and the Manifestation of Powers' by Alexander Bird
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| A. | Justification Problems | |
| B. | Internal Justification | |
| C. | External Justification | |
| D. | Scepticism | |
| E. | Relativism |