Summa Theologica
Ia q. 56 : Of The Angel's Knowledge Of Immaterial Things (Three Articles)
[Letter]
[A4]
Entire question
[Letter]
[A4]
1.
Whether an angel knows himself?
[Letter]
[A4]
2.
Whether one angel knows another?
[Letter]
[A4]
3.
Whether an angle knows God by his own natural principles?