Reply Obj. 6: In the causes of evil we do not proceed to infinity, but reduce all evils to some good cause, whence evil follows accidentally. _______________________
TREATISE ON THE ANGELS (QQ. 50-64) _______________________
QUESTION 50
OF THE SUBSTANCE OF THE ANGELS ABSOLUTELY CONSIDERED
(In Five Articles)
Now we consider the distinction of corporeal and spiritual creatures: firstly, the purely spiritual creature which in Holy Scripture is called angel; secondly, the creature wholly corporeal; thirdly, the composite creature, corporeal and spiritual, which is man.
Concerning the angels, we consider first what belongs to their substance; secondly, what belongs to their intellect; thirdly, what belongs to their will; fourthly, what belongs to their creation.
Their substance we consider absolutely and in relation to corporeal things.
Concerning their substance absolutely considered, there are five points of inquiry:
(1) Whether there is any entirely spiritual creature, altogether incorporeal?
(2) Supposing that an angel is such, we ask whether it is composed of matter and form?