Combining Texts

Ideas for 'Topics', 'Nature and Utility of Religion' and 'Frege philosophy of mathematics'

expand these ideas     |    start again     |     choose another area for these texts

display all the ideas for this combination of texts

---

2 ideas

5. Theory of Logic / A. Overview of Logic / 6. Classical Logic

9820	In classical logic, logical truths are valid formulas; in higher-order logics they are purely logical [Dummett]

5. Theory of Logic / L. Paradox / 2. Aporiai

11261

Puzzles arise when reasoning seems equal on both sides [Aristotle]