Abstract
In the Buddhist view there can be no affirmation without negation and positive universals that in the Nyaya view are independent and eternal common characters shared by all members of a natural class should be replaced by difference from others that is a negative entity and a non-entity, e.g. what is meant by a cow is not that it is possessed of cow-ness but that it is not a non-cow. Udayana points out that cognition of a negative entity presupposes cognition of what is negated, the negatum. Thus, cognition of cow if the same as not-not cow presupposes cognition of not-cow, but cognition of not-cow presupposes cognition of cow; hence the Buddhist view is open to the charge of mutual dependence. This difficulty does not arise in the Nyaya view. Even if there is no affirmation without negation, negation is not necessarily the content of affirmation. So far as common experience goes, cognition of positive entities does not always require cognition of negative entities, e.g. a cow may be recognized as a cow and possessed of cow-ness without reference to non-cows.