the phenomena of the natural and moral world to an equality, become, by degrees, the prudence of the age, and an useful instrument in the hands of the powerful, or artful politician. Hence the uncertainty of our notions of honour and virtue; an uncertainty which will ever remain, because they change with the revolutions of time, and names survive the things they originally signified; they change with the boundaries of states, which are often the same both in physical and moral geography.
Pleasure and pain are the only springs of action in beings endowed with sensibility. Even amongst the motives which incite men to acts of religion, the invisible legislator has ordained rewards and punishments. From a partial distribution of these, will arise that contradiction, so little observed, because so common; I mean, that of punishing by the laws the crimes which the laws have occasioned. If an equal punishment be ordained for two crimes that injure society in different de-
