Envoi

Since the first discovery of the arts, war, commerce, and religious zeal have diffused, among the savages of the Old and New World, those inestimable gifts: they have been successively propagated; they can never be lost. We may therefore acquiesce in the pleasing conclusion that every age of the world has increased, and still increases, the real wealth, the happiness, the knowledge, and perhaps the virtue, of the human race.

Gibbon, "General Observations on the Fall of the Roman Empire in the West".