BOOK VIII

1. There always has been and always will be movement.
2. Refutation of objections to the eternity of movement.
3. There are things that are sometimes in movement, sometimes at rest.
4. Whatever is in movement is moved by something else.
5. The first movent is not moved by anything outside itself.
257^a 31. The first movent is immovable.
6. The immovable first movent is eternal and one.
259^a 20. The first movent is not moved even incidentally.
259^b 32. The primum mobile is eternal.
7. Locomotion is the primary kind of movement.
261^a 28. No movement or change is continuous except locomotion.
8. Only circular movement can be continuous and infinite.
9. Circular movement is the primary kind of locomotion.
265^a 27. Confirmation of the above doctrines.
10. The first movent has no parts nor magnitude, and is at the circumference of the world.