Thus, according to Lincoln, a union held together with threats of invasion, mass murder, and bloodshed, along the lines of the twentieth-century Soviet Union, is the essence of freedom, whereas a voluntary union along the lines of the original American union of the founders is the essence of anarchy and despotism.
-Thomas DiLorenzo
Read on:
https://www.lewrockwell.com/lrc-blog/lincoln-vs-rothbard-on-secession-and-liberty/