 The doctrine of eternal origination rests on a conception of the universe as a moving entity in which the cause-effect relationship is a relation between a mover and a moved object (see Tiqqun n.30: 29; cf. Tahāfut al-Tahāfut:  third discussion, 101). In the natural realm, all processes of generation and corruption consist in motion—for instance the movement from potential to actual existence—and occurs through motion. All natural changes depend on the movements of the celestial spheres, which in turn depend on the Mover of the outermost sphere, the Prime Mover (Tiqqun n.30: 29,  n.39: 62).