因此，保护关税如果使价值有所牺牲的话，它却使生产力有了增长，足以抵偿损失而有余，由此使国家不但在物质财富的量上获得无限增进，而且一旦发生战事，可以保有工业的独立地位。

• If,therefore,a sacrifice of value is caused by protective duties,it is made good by the gain of a power of production,which not only secures to the nation an infinitely greater amount of material goods,but also industrial independence in case of war.