You have chosen 'Isagoge ('Introduction')' by Porphyry, 'Principles of Theoretical Logic' by Hilbert,D/Ackermann,W and 'Unity of Science as a Working Hypothesis' by H.Putnam/P.Oppenheim
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 |