The logical aggregate of all the subjects of which a term can be universally and affirmatively predicated in any particular state of information, over and above any of which its meaning implies that it is predicable, constitutes, when regarded as a quantity, its informed breadth. Thus, if, by definition any rational animal is a man, the aggregate of all the subjects of which non-man is predicable, excepting ‘non-rational’ and ‘non-animal’ make up the informed breath of non-man.