You have chosen 'The Architecture of Theories' by Charles Sanders Peirce, 'Foundations of Geometry' by Bertrand Russell and 'Review of Bob Hale's 'Abstract Objects'' by Timothy Williamson
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| A. | Justification Problems | |
| B. | Internal Justification | |
| C. | External Justification | |
| D. | Scepticism | |
| E. | Relativism |