 For Pereira there is no real difference between the sensory and intellectual faculties. Neither must they be understood as two different accidents of one unique substance, i.e., the soul, because such a diversity would make impossible to explain how, if the objects of both sense and intellect are different realiter, they can converge on a single object: it would then be necessary to appeal for a third power or faculty which would analyze both objects and, finally, link them. In addition, the unity of the soul would be broken, because it would be divisible according to the various objects it can perceive and understand; in this case one could not explain how it is possible that, since those different objects are processed by different cognitive faculties, knowledge is always a simultaneous and indivisible achievement. Pereira emphasized that this is only because the subject that reaches this knowledge is necessarily one and indivisible (AM: I.379–381).