Because we have, as mature human beings, in civilized society, a principle of action called Conscience, which we recognize as distinct from Self-love and Benevolence, as well as from the Appetites and Passions, Butler would make us believe that this is, from the first, a distinct principle of our nature.

The proper reply is to analyze Conscience; showing at the same time, from its very great discrepancies in different minds, that it is a growth, or product, corresponding to the education and the circumstances of each, although of course involving the common elements of the mind.
In his Sermons on Compassion (V., VI.), he treats this as one of the Affections in his second group of the Feelings (Appetites, Passions, and Affections); vindicates its existence against Hobbes, who treated it as an indirect mode of self-regard; and shows its importance in human life, as an adjunct to Rational Benevolence and Conscience.
In discussing Benevolence (Sermon XII.) Butler's object is to show that it is not ultimately at variance with Self-love.

In the introductory observations, he adverts to the historical fact, that vice and folly take different turns in different ages, and that the peculiarity of his own age is 'to profess a contracted spirit, and greater regards to self-interest' than formerly.

He accommodates his preaching of virtue to this characteristic of his time, and promises that _there shall be all possible concessions made to the favourite passion_.
His mode of arguing is still the same as in the sermons on Human Nature.

Self-love does not comprehend our whole being; it is only one principle among many.