… my basic motivation for being a libertarian had never been economic but moral. … While I was convinced that the free market was more efficient and would bring about a far more prosperous world than statism, my major concern was moral: the insight that coercion and aggression of one man over another was criminal and iniquitous, and must be combatted and abolished.
Murray N. Rothbard – Betrayal of the American Right, pp. 73–74
Lysander Spooner (1808–1887) is the American individualist anarchist and legal theorist known mainly for setting up a commercial post office in competition with the government and thereby being shut down. But he was also the author of some of the most radical political and economic writings of the 19th century, and continues to have a huge influence on libertarian thinkers today. He was a dedicated opponent of slavery in all its forms — even advocating guerrilla war to stop it — but also a dedicated opponent of the federal invasion of the South and its postwar reconstruction.