  Here, Maimonides rehearses the idea, seen clearly in his Islamic predecessors, that there are a series of intellects which generate one another (i.e. the highest generating the next highest, and so on until the lowest intellect, viz. active intellect). Maimonides then goes on to mirror the idea, also found in al-Farabi and Avicenna, that each intellect additionally generates the body of its sphere, and that there is, furthermore, a set of influences which these spheres wield over the generation and corruption of terrestrial, corporeal beings on earth: