Summa Theologica

Ia q. 54 : Of The Knowledge Of The Angels (Five Articles)

[Letter] [A4] Entire question
[Letter] [A4] 1. Whether an angel's act of understanding is his substance?
[Letter] [A4] 2. Whether in the angel to understand is to exist?
[Letter] [A4] 3. Whether an angel's power of intelligence is his essence?
[Letter] [A4] 4. Whether there is an active and a passive intellect in an angel?
[Letter] [A4] 5. Whether there is only intellectual knowledge in the angels?