and the physician are not in similar senses causes of a healthy state.
And that Pleasure does arise upon the exercise of every Percipient Faculty is evident, for we commonly say that sights and sounds are pleasant; it is plain also that this is especially the case when the Faculty is most excellent and works upon a similar Object: and when both the Object and Faculty of Perception are such, Pleasure will always exist, supposing of course an agent and a patient.
Furthermore, Pleasure perfects the act of Working not in the way of an inherent state but as a supervening finish, such as is bloom in people at their prime. Therefore so long as the Object of intellectual or sensitive Perception is such as it should be and also the Faculty which discerns or realises the Object, there will be Pleasure in the Working: because when that which has the capacity of being acted on and that which is apt to act are alike and similarly related, the same result follows naturally.