In fact, although from the agreement of perceptions with laws in accordance with universal natural concepts (the categories), we do not and cannot find in ourselves the slightest effect upon the feeling of pleasure, because the Understanding necessarily proceeds according to its nature without any design; yet, on the other hand, the discovery that two or more empirical heterogeneous laws of nature may be combined under one principle comprehending them both, is the ground of a very marked pleasure, often even of an admiration, which does not cease, though we may be already quite familiar with the objects of it. We no longer find, it is true, any marked pleasure in the comprehensibility of nature and in the unity of its divisions into genera and species, whereby are possible all empirical concepts, through which we cognise it according to its particular laws. But this pleasure has certainly been present at one time, and it is only because the commonest experience would be impossible without it that it is gradually confounded with mere cognition and no longer arrests particular attention. There is then something in our judgements upon nature which makes us attentive to its purposiveness for our Understanding--an endeavour to bring, where possible, its dissimilar laws under higher ones, though still always empirical--and thus, if successful, makes us feel pleasure in that harmony of these with our cognitive faculty, which harmony we regard as merely contingent. On the other hand, a representation of nature would altogether displease, by which it should be foretold to us that in the smallest investigation beyond the commonest experience we should meet with a heterogeneity of its laws, which would make the union of its particular laws under universal empirical laws impossible for our Understanding. For this would contradict the principle of the subjectively-purposive specification of nature in its genera, and also of our reflective Judgement in respect of such principle.