Of course you’re befuddled, Vaccha. Of course you’re confused. Deep, Vaccha, is this phenomenon, hard to see, hard to realize, tranquil, refined, beyond the scope of conjecture, subtle, to-be-experienced by the wise. For those with other views, other practices, other satisfactions, other aims, other teachers, it is difficult to know.
from the Aggi-Vacchagotta Sutta