I’m familiar with it because I grew up in the RCC but I’m Orthodox now and Orthodox Catholics don’t particularly follow anything Aquinas wrote including the summa!
Now you got my attention! Would you mind explaining why?
He’s post schism! So he’s only venerated in western dominant churches like RCC, Anglican, Lutheran etc- he’s not venerated or even named as a saint at all in Eastern Orthodoxy. He was mid 1200s! Panis Angelicus is a phenomenal hymn tho!!!!!
What about Saint Augustin?
Saint Augustine of Hippo? He is pre-schism! Venerated by all who venerate saints!
Augustine, quoted on the Summa https://nostrcheck.me/media/1bcaf769395ec552ea5e15427ad78fadf6076543df3f9fd3d2900577621b50a0/06a3beb03361ec5446b462e6c1e1ffbe6caf1c0553dbaa5d532941d496d3c6d5.webp
I like that quote!!! Thank you!!
There are a lot of St. Augustine quotations on St. Thomas Aquinas works. I'm pretty sure he is the most quoted. Maybe you are familiarized with the Catena Aurea, a compilation of commentaries by the Church fathers. There are plenty quotes arguing the necessity of the Sacraments by authors like St. Jerome, St. John Chrysostom, St. Beda... This is my everyday reading: the daily Gospel and the commentaries on the Catena Aura about that passage