John C. Calhoun was the philosopher-king of the old south, the spiritual mentor of Stephens, Davis, and most of the political leaders of the Confeder… - Harry V. Jaffa

According to Abraham Lincoln, public opinion always has a central idea from which all its minor thoughts radiate. The central idea of the American Founding—and indeed of constitutional government and the rule of law—was the equality of mankind. This thought is central to all of Lincoln's speeches and writings, from 1854 until his election as president in 1860. It is immortalized in the Gettysburg Address.

Well, Lincoln, in his July 4th Special Message to the Congress, 1861, said that the people of the South were a law-abiding people, and they would not have undertaken to do what they were now doing if it hadn't been for the invention of an ingenious sophism, according to which a state could secede from the Union without the permission of the Union or of any other state.

The issue between Lincoln and Douglas was identical to the issue between Socrates and Thrasymachus in the first book of Plato's Republic. Not similar to it. Identical. It is a question of whether the people make the moral order or the moral order makes the people.