/summa/FP/FPVII/FP_Q57:
We next investigate the material objects which are known by the angels. Under this heading there are five points of inquiry:
(1) Whether the angels know the natures of material things?
(2) Whether they know single things?
(3) Whether they know the future?
(4) Whether they know secret thoughts?
(5) Whether they know all mysteries of grace?