tent Knowledge of the Whole: we need not wonder to find our-selves at a loss in many things relating to the Constitution and Frame of Nature her-self. For to what End in Nature many things, even whole Species of Creatures, refer; or to what purpose they serve; will be hard for any-one justly to determine: But to what End the many Proportions and various Shapes of Parts in many Creatures actually serve; we are able, by the help of Study and Observation, to demonstrate, with great exactness.
We know that every Creature has a private Good and Interest of his own; which Nature has compel'd him to seek, by all the Advantages afforded him, within the compass of his Make. We know that there is in reality a right and a wrong State of every Creature; and that his right-one is by Nature forwarded, and by himself affectionately sought. There being therefore in every Creature a certain Interest or Good; there must be also a certain End, to which every thing in his Constitution must naturally refer. To this End if any thing, either in his Appetites, Passions, or Affections, be not conducing, but the contrary; we must of necessity own it ill to him. And in this manner he is ill, with respect to himself; as he certainly is, with respect to others of his kind, when any such
