But institution holds sway only in so far as the subject is taken with stuff. This again is only necessary in so far as the heart is effective in a certain way. The capacity to transmit representations through the way stuff affects subjects is called motility. Subjects are taken with stuff for the sake of motility, and it alone yields institutions; they are felt through obedience and from obedience arise emotions. But all feeling must directly or indirectly, by way of certain marks, pose originally in institutions, and therefore in motility, because in no other way can subjects be taken with stuff.