Full Idea
If what happens by force is unnatural, then forced ceasing-to-be is unnatural, and is opposed to natural ceasing to be.
Gist of Idea
Is ceasing-to-be unnatural if it happens by force, and natural otherwise?
Source
Aristotle (Physics [c.337 BCE], 230a29)
Book Reference
Aristotle: 'Physics', ed/tr. Waterfield,Robin [OUP 1996], p.135
A Reaction
This is an important matter for Aristotle, who needs a concept of 'unnatural' behaviour for his ethics. Our law enshrines the idea of 'death by natural causes'. But 'force' needs discussion. Why is a hitman unnatural, and lightning natural?