You have chosen 'Queries to the 'Opticks'' by Isaac Newton, 'Either/Or: a fragment of life' by Sren Kierkegaard and 'Of Organum or Ars Magna of Thinking' by Gottfried Leibniz
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 |