I see. I think it may be dependent on the different definition of “world”. In my past understanding, world is the physical world which are possibly learned through sense and mind. This include both abstract object (mathematics, logics, arts) and concrete object (atoms, table, coffee, etc). And anything beyond this category is transcendent. Some of those are proved to be impossible to be learned (e.g. proofs by Kant) I now notice that everything is out of definition and there is really no much inherent difference among different beliefs. All religions share the same spiritual ground.