— Continued: In his 1851 book The Harmony of Interests, Abraham Lincoln’s economic adviser Henry Carey contrasted the two systems, opening with the words: ‘Two systems are before the world.’ Carey’s prose is rather long, but it could be summarized along seven key dimensions: 1. Trade versus production. One system directs capital and draws labor towards trade and speculation. This tends to depress wages and erode prosperity. The other system fosters production of goods, services