"Passive commerce . . . should thus . . . [compel us] to content ourselves with the first price of our commodities, and to see the profits of our trade snatched from us, to enrich our enemies and persecutors. That unequalled spirit of enterprise . . . an inexhaustible mine of national wealth, would be stifled and lost; and poverty and disgrace would overspread a country, which, with wisdom, might make herself the admiration and envy of the world."