Sure, but I'm not sure it's clear that working in e.g. theology didn't help him in his more technical work.

Have a broad and well-rounded view tends to help. I don't know a good mathematician who doesn't read, write, play music, explore other fields with passion and vigor. You get fresh ideas and it keeps your mind limber and flexible.

I'm not sure you could say a Newton who knew nothing but physics and physics only would have made the same breakthroughs.