Good is essentially diffusive
Good is essentially diffusive. If that which proceeds from good is itself good, the latter must needs diffuse some other good: so on indefinitely. But good has the nature of an end. Therefore there is an indefinite series of ends...
Objection 1. It would seem that there is no last end of human life, but that we proceed to infinity. For good is essentially diffusive, as Dionysius states (Div. Nom. iv). Consequently if that which proceeds from good is itself good, the latter must needs diffuse some other good: so that the diffusion of good goes on indefinitely. But good has the nature of an end. Therefore there is an indefinite series of ends.