Proclus, The Six Books of Proclus, the Platonic Successor…
“ These things as it appears to me persuaded the Elean guest in the Sophista, when discussing that which is perfectly being, to admit that not only being is there, but also life, intellect and soul. For if true and real being is venerable and honorable, intellect is there in the first place, says he. For it is not lawful for that which is of itself venerable and immaterial to be without intellect. But if intellect is in that which is perfectly being, intellect will entirely be moved. For it is not possible for intellect ever to subsist, either without motion or permanency. ”
