"A war for a great principle ennobles a nation. A war for commercial supremacy, upon some shallow pretext, is despicable, and more than aught else demonstrates to what immeasurable depths of baseness men and nations can descend. Commercial greed values the lives of men no more than it values the lives of ants. The slave-trade is as acceptable to a people enthralled by that greed, as the trade in ivory or spices, if the profits are as large."