You have chosen 'The Theory of Transfinite Numbers' by George Cantor, 'Platonism and the Spiritual Life' by George Santayana and 'Principles of Philosophy of the Future' by Ludwig Feuerbach
start again | choose another area for these texts | all the ideas for this combination of texts| All the ideas for Natural Theory, or select a subheading: |
| A. | Speculations on Nature | |
| B. | Natural Kinds | |
| C. | Causation | |
| D. | Laws of Nature |