There are many rules of movement, and of the understanding[;] every ship, every fish, follows the rules of movement. We ourselves are subject to these laws. We observe them in walking and in other movements. Nature has implanted these laws in men and animals. But in the case of these laws we do nothing more than fulfill them unknowingly, like the animals.

It would be needless to seek to scout out these laws and not to take a single step without reflection. As the fish in its swimming observes these rules most exactly by means of practice, so can we too, just by means of practice only, acquire a skill in observation of them[.] How quickly do we know how to help ourselves when we are about to fall? But we would lack this capacity if we sought first to reflect on what position we should take.

Borellus has written a book on rule-governed movement.

Besides the laws and rules of movement, however, there are also rules and laws of the understanding. We arrange all our judgments in accordance with these laws. As a child in walking learns to observe the laws of movement, so too, in judging, does it seek to form itself according to those laws of the understanding. All this it does unknowingly, and it acquires the skill merely through practice.