Well there's probably the original image of Aquinas that illustration was based from, that isn't covered by copyright law (or really, just an image of any old monk, who would know?) It's a cool idea and then everyone would be like me, asking "What does that mean?"

I love the text she used btw.

I'd totally recommend watching the series, it's visually stunning and there are terrific characters. ;)

*adds series to queue*