 Because we shall afterwards frequently use the Words Interest, Advantage, natural Good, it is necessary here to fix their Ideas. The Pleasure in our sensible Perceptions of any kind, gives us our first Idea of natural Good, or Happiness; and then all Objects which are apt to excite this Pleasure are call’d immediately Good…Our Sense of Pleasure is antecedent to Advantage or Interest, and is the Foundation of it. (Inquiry, 86) 