He will not enter into the question as to the relative shares of benevolence and self-love in the human constitution.

Let the generous sentiments be ever so weak, they still direct a preference of what is serviceable to what is pernicious; and on these preferences a moral distinction is founded.

In the notion of morals, two things are implied; a sentiment common to all mankind, and a sentiment whose objects comprehend all mankind; and these two requisites belong to the sentiment of humanity or benevolence.
Another spring of our constitution, that brings a great addition of force to moral sentiment, is Love of Fame.

The pursuit of a character, name, and reputation in the world, leads to a habit of surveying our own actions, begets a reverence for self as well as others, and is thus the guardian of every virtue.

Humanity and Love of Reputation combine to form the highest type of morality yet conceived.
The nature of moral _approbation_ being thus solved, there remains the nature of _obligation_; by which the author means to enquire, if a man having a view to his own welfare, will not find his best account in the practice of every moral virtue.