"The End mixes itself up with the efficient cause, the desire for the end gives the first impulse of motion, the final cause of anything becomes identical with the good of that thing, so that the end and the good become synonymous terms. And this is not only the case with regard to individual objects, but all nature and the whole world exist for the sake of, and in dependence on, their final cause, which is the Good. This, existing as an object of contemplation and desire, though itself immovable, moves all things. And so the world is rendered finite, for all nature desiring the Good and tending towards an end is harmonised and united."