You have chosen 'Elucidation of some points in E.Schröder' by Gottlob Frege, 'The Principles of Mathematics' by Bertrand Russell and 'Philosophy and the Nature of Language' by David E. Cooper
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A. | Justification Problems | |
B. | Internal Justification | |
C. | External Justification | |
D. | Scepticism | |
E. | Relativism |