 This passage shows that Indian tradition explicitly speaks of the existence of partial quantity, the third quantity to be considered along with totality apprehended by A the universal affirmative of the square, and zero quantity apprehended by E the universal negative of the square.To the two universals A and E entertaining a relationship of contrariety, one should add the third contrary constituted by the double negation of the first two.As the subcontrary I contradicts E and the subcontrary O contradicts A, the logical proposition apprehending partial quantity can be represented by the conjunction of I and O