That which is emptiness does not empty phenomena, because phenomena themselves are empty; that which is signlessness does not make phenomena signless, because phenomena themselves are signless; that which is wishlessness does not make phenomena wishless, because phenomena are themselves wishless. To so analyse, oh Kasyapa, is called the middle path - in the correct analysis of phenomena. I say that whoever analyses emptiness by objectifying emptiness has fallen, fallen far from my teachings.

-- The Buddha, Rantnakuta Sutra