You have chosen 'Set Theory and related topics (2nd ed)' by Seymour Lipschutz, 'The Philosophy of the Inductive Sciences' by William Whewell and 'Intro to 2nd ed of Principia Mathematica' by Bertrand Russell
start again | choose another area for these texts | all the ideas for this combination of texts| All the ideas for Thought, or select a subheading: |
| A. | Modes of Thought | |
| B. | Mechanics of Thought | |
| C. | Content | |
| D. | Concepts | |
| E. | Abstraction |