The moment this House undertakes to legislate upon this subject slavery, it dissolves the Union. Should it be my fortune to have a seat upon this floor, I will abandon it the instant the first decisive step is taken looking towards legislation of this subject. I will go home to preach, and if I can, practice, disunion, and civil war, if needs be. A revolution must ensue, and this republic sink in blood.

Selections from the Letters and Speeches of the Hon. James H. Hammond: Of South Carolina (ed. 1866)