You have chosen 'Ethics: Inventing Right and Wrong' by J.L. Mackie, 'Proof of an External World' by G.E. Moore and 'Theory of Knowledge (2nd edn)' by Keith Lehrer
start again | choose another area for these texts | all the ideas for this combination of texts| All the ideas for Mathematics, or select a subheading: |
| A. | Nature of Mathematics | |
| B. | Foundations for Mathematics | |
| C. | Sources of Mathematics |