But various mansions are not distinguished in purgatory and limbo. Therefore in like manner neither should they be distinguished in heaven. Further, in every well-ordered city there is a distinction of mansions. Therefore we should distinguish various mansions there according to the various degrees of beatitude. Now the end of local movement is a place, and when a thing has arrived at that place it remains there at rest and is maintained therein.
Mansion implies the notion of end and consequently of reward which is the end of merit.
Those who were in limbo or are now in purgatory have not yet attained to their end. Wherefore various mansions are not distinguished in purgatory or limbo, but only in heaven and hell, wherein is the end of the good and of the wicked. Now the proper ability of a thing is its natural power. Therefore the gifts also of grace and glory are distributed according to the different degrees of natural power. Thou wilt render to every man according to his works.