2 I ask, then, in what manner were the rest of the Æons produced? Was it so as to be united with Him who produced them, even as the solar rays are with the sun; or was it actually and separately, so that each of them possessed an independent existence and his own special form, just as has a man from another man, and one herd of cattle from another? Or was it after the manner of germination, as branches from a tree? And were they of the same substance with those who produced them, or did they derive their substance from some other [kind of] substance? Also, were they produced at the same time, so as to be contemporaries; or after a certain order, so that some of them were older, and others younger? And, again, are they uncompounded and uniform, and altogether equal and similar among themselves, as spirit and light are produced; or are they compounded and different, unlike [to each other] in their members?
Source: Adversus haereses (New Advent)