You have chosen 'Preface to 'Principles of Philosophy'' by René Descartes, 'Lectures on the Principles of Political Obligation' by T.H. Green and 'The Trouble with Possible Worlds' by William Lycan
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 |