[mironathetin]

"The trick to sane OOP is doing as little of it as possible. When you maximize the number of pure methods, minimize mutable state, minimize inheritance and so on, you are doing OOP well."

Maybe...

The attempt to forbid (global) state, as written in the op, is honourable, but I think, if a developer wants state, (s)he'll find a way. There is no good code without good developers. So lets go on educating ourselves.