You Aquinas experts out there, help me out. I know Aquinas held God to be timeless and to have timeless knowledge of the world’s entire history of becoming. But there’s an interesting passage in the Summa (18.104.22.168) that has me stumped. For those unfamiliar with citing the Summa, that’s Part 1, Question 89 [on the knowledge of the separated soul], Article 7 [on whether local distance impedes the knowledge in the separated soul], and then Aquinas’ reply to Objection 3).
Further, as there is distance of place, so is there distance of time. But distance of time impedes knowledge in the separated soul, for the soul is ignorant of the future. Therefore it seems that distance of place also impedes its knowledge.
The future, which is distant in time, does not actually exist, and therefore is not knowable in itself, because so far as a thing falls short of being, so far does it fall short of being knowable. But what is locally distant exists actually, and is knowable in itself. Hence we cannot argue from distance of time to distance of place.
Aquinas seems pretty matter-of-fact about the unknowability of non-existent/non-actual entities, and obviously I want to agree with him. Future events and objects are simply not actual, and are thus unknowable. They have no ‘being’. This has obvious consequences for one’s knowledge of the future. We don’t know the future not because there is in fact something to know of which we’re ignorant. We don’t know because there’s nothing there to know. I was surprised to find this passage though. John Sanders mentions it in an article on his site.
My guess is that Aquinas qualifies all this when it comes to God. God is not limited in his knowledge of creation to creation’s own temporal perspectives. It’s only finite knowers who exist at a time who cannot know future actualities because those actualities do not exist at the knower’s time. But God is not a finite knower located at a time. If anything, he’s at all times and so is immediately present to Creation’s entire timeline (as it were). So God doesn’t fall within the scope of Aquinas’ comments.
You experts out there?