Yeah I love this insight, I used it to formulate a sort of basis for my own codified epistemology that's roughly based on a realist interpretation of Kant (screw idealism or the assumption that the real world is unknowable and dismissable). Piaget also has something that sort of answers this as saying that every truth is a tool in a framework within which it applies. But I haven't read much about it yet, just discovered him.
Discussion
Realism rules. Aquinas is the GOAT
You don't happen to know portuguese, do you? The best book I've ever read on the topic of gnosiology and epistemology is "Gnosiologia Pluridimensional", by the latvian Father Stanislavs Ladusãns, but it was written in portuguese and has no translations that I know of. This book is a gem. If you can, try to find it and ask for help translating it. It would be a great service to the philosophy world