 Thus in distinguishing his categories, Kant begins from Aristotelian logic in outlining four respects in which one can classify any judgment: according to its quantity, quality, relation, or modality. In each of these respects or ‘moments’ of judgment, there are three alternative classifications; thus, e.g., in respect of quantity, a judgment may be universal, particular, or singular; in respect of its relation, a judgment may be categorical, hypothetical, or disjunctive, and so on. These Aristotelian ways of classifying judgments are the clue to discerning the twelve correlated concepts of the understanding. So, e.g., from noting that all judgments are either universal (e.g., All swans are white), particular (e.g., Some swans are white) or singular (e.g., Cygmund is white), we can arrive at the three corresponding categories of quantity: unity, plurality, and totality. Via this route, Kant ultimately distinguishes twelve pure concepts of the understanding (A80/B106), divided into four classes of three: