David Hume,
Treatise of Human Nature/Book 3…
(1739)
“ All lovers of virtue (and such we all are in speculation, however we may degenerate in practice) must certainly be pleas'd to see moral distinctions deriv'd from so noble a source, which gives us a just notion both of the generosity and capacity of human nature. It requires but very little knowledge of human affairs to perceive, that a sense of morals is a principle inherent in the soul, and one of the most powerful that enters into the composition. ”
