أن الكليات خمس، الأول: الجنس، والثاني: النوع، والثالث: الفصل، والرابع: الخاصة، والخامس: العرض العام.
Note: the predicables are five: genus, species, differentia, property and common accident.
Genus: shared nature across species — animal.
Species: one specific nature shared by its individuals — human.
Differentia: essential distinction — rational.
Property: extrinsic but peculiar to one species — capacity for laughter.
Common accident: extrinsic and shared across species — walking.