1. Nature observes a suitable time.

2. Nature prepares the material, before she begins to give it form.

3. Nature chooses a fit subject to act upon, or first submits one to a suitable treatment in order to make it fit.

4. Nature is not confused in its operations, but in its forward progress advances distinctly from one point to another.

5. In all the operations of nature, development is from within.

6. Nature, in its formative processes, begins with the universal and ends with the particular.

7. Nature makes no leaps, but proceeds step by step.

8. If nature commences anything, it does not leave off until the operation is completed.

9. Nature carefully avoids obstacles and things likely to cause hurt.

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