You have chosen 'Aristotle and Descartes on Matter' by Gottfried Leibniz, 'Mathematics is Megethology' by David Lewis and 'Principles of Philosophy of the Future' by Ludwig Feuerbach
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| A. | Justification Problems | |
| B. | Internal Justification | |
| C. | External Justification | |
| D. | Scepticism | |
| E. | Relativism |