You have chosen 'Concerning the Author' by Charles Sanders Peirce, 'Of Organum or Ars Magna of Thinking' by Gottfried Leibniz and 'Reflections on Knowledge, Truth and Ideas' by Gottfried Leibniz
start again | choose another area for these texts | all the ideas for this combination of texts| All the ideas for Existence, or select a subheading: |
| A. | Nature of Existence | |
| B. | Change in Existence | |
| C. | Structure of Existence | |
| D. | Theories of Reality | |
| E. | Categories |