You have chosen 'When Does a Life Begin?' by Michael Lockwood, 'Outline of a System of Utilitarianism' by J.J.C. Smart and 'What is Property?' by Pierre-Joseph Proudhon
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 |