Now the understanding certainly teaches us (though also through synthetic principles) how to think of all things in nature as contained in a transcendental system in accordance with a priori concepts (the categories); but the power of judgement, which (as reﬂective) also seeks out concepts for empirical representations as such, must assume therefore in addition that nature in its boundless multiplicity has hit upon a division into genera and species which makes it possible for our power of judgement to find concordance amongst the natural forms which it compares with one another, and to arrive at empirical concepts, and their interconnection, by ascending to more general, though still empirical, concepts; ie the power of judgement presupposes a system of nature in accordance with empirical laws as well, and does so a priori, and therefore by means of a transcendental principle.