4059. That affections have with them all [appropriate] science, may abundantly appear from animals - as much those that are evil cupidities, as those which are [good] affections, and especially from birds, which know all and singular the things pertaining to their affections, of which much might be said; as, for instance, that they know how to bring forth and nourish their young, how to obtain food for themselves, how to foresee and provide for themselves against a coming winter, how to construct their nests, how to live with their mates, and what forms of government to adopt, -all which they know better than man with all his sciences. Man would have no need to establish such artificial systems of science, and to learn them, nor to write so many books respecting the training of infants and children, if he had been in the love of true faith. But since he is only in cupidities, and has merely persuaded himself of certain things of faith separate from love, he therefore knows nothing except through sciences orally taught or delivered through the medium of books, because such things as follow love are [now] to be learned.