The Six Books of Proclus on the Theology of Plato, Volume 2

For if it should proceed indeed, but should not return to the cause of this progression, it would not aspire after its cause. For every thing which desires is converted to the object of its desire. Moreover, every thing aspires after good, and to each thing the attainment of it is through the proximate cause. Every thing, therefore, aspires after its cause. For well-being is derived to every thing from that through which its existence is derived. But appetite is first directed to that through which well-being is derived. And conversion is to that to which appetite is first directed.