an organizing principle that subsumes a variety of intuitions and refers the intuition as intuitions of objects

a special unary predicate that denotes a set, as with Eagle and Number

a subset of all perceptions

the active species of representation, by means of which our under­standing enables us to think. By requiring perceptions to conform to the categories, concepts serve as 'rules' allowing us to perceive general relations be­tween representations. (Cf. intuition.)

A class or category that subsumes a number of individual instances. An important way of relating concepts is through propositions, which make some assertion that relates a subject (e.g., chickens) and a predicate (e.g., lay eggs).