The Internal World
Just as some Buddhists deny that the external world is ultimately real, so other Buddhists deny the ultimate reality of consciousness. This chapter examines the debate among different Buddhist schools over the status of cognition. This grows out of a debate over the problem of meta-cognition: if there is no self, then what is it that cognizes cognition? Momentariness and the irreflexivity principle pose obstacles to a satisfactory account. This leads the Yogācāra-Sautrāntika philosophers Dignāga and Dharmakīrti to develop the theory that every cognition is self-cognizing, but that irreflexivity is not violated since noetic and noematic poles of a cognition are non-distinct. Their reflexivity account is challenged by a higher-order thought account developed in the Madhyamaka school. According to this account, cognition is posited as a useful way of explaining bodily and verbal behavior, and so is not to be thought of as ultimately real. There is also some discussion of the difficulty for the reflexivist of explaining the existence of other minds.