You have chosen 'Frege's Concept of Numbers as Objects' by Crispin Wright, 'Law and Authority' by Peter (Pyotr) Kropotkin and 'Critique of Practical Reason' by Immanuel Kant
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| A. | Justification Problems | |
| B. | Internal Justification | |
| C. | External Justification | |
| D. | Scepticism | |
| E. | Relativism |