Abstract

Proposition 28 from Proclus'Elements of Theologyis consistently cited as saying that every producing causefirstbrings about effects that are like it andtheneffects that are unlike it. This is a theorem to which Proclus is indeed committed, but I argue that it is not what Proclus is claiming here. At this stage of his general argument, he merely argues that every cause produces things that are like it, without saying anything about other products than the immediate ones. The standard interpretation of proposition 28 is therefore wrong. This becomes clear if one pays close attention to the argumentative structure of theElements of Theologyand to the proof given for proposition 28.