I. If we consider the extension of the subject, a proposition is styled singular, particular, or universal, according as its subject expresses a singular, particular, or universal idea (No. 12). The form of the term expressing that idea may be misleading, the meaning must be carefully considered. Thus, ‘a man is a creature,’ ‘man is a creature,’ ‘all men are creatures,’ ‘every man is a creature,’ ‘no man is necessary,’ are all universal propositions; while ‘a man was slain’ is particular (for here