You have chosen 'Frege philosophy of mathematics' by Michael Dummett, 'Logical Necessity' by Ian Rumfitt and 'The Book of Chuang Tzu' by Zhuangzi (Chuang Tzu)
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| A. | Justification Problems | |
| B. | Internal Justification | |
| C. | External Justification | |
| D. | Scepticism | |
| E. | Relativism |