My claim that dogma does not belong in science is not a scientific claim. It is a claim *about* science. It is a philosophical claim. Philosophical claims often cannot be proved. As the great mathematicial and philosopher Kurt Goedel said, “In any non-trivial axiomatic system, there are true theorems which cannot be proven.”
By the way, genius, are you saying that dogma *does* belong in science? Just what is your point?
dogma does not belong in science is itself dogmatic and does not need proof, and may be set off to the side and ignored. That doesn't mean it is part of a non-trivial axiomatic system.