It is not conclusive proof of a doctrine's correctness that its adversaries use the police, the hangman, and violent mobs to fight it. But it is a proof of the fact that those taking recourse to violent oppression are in their subconscious convinced of the untenability of their own doctrines.

The alcoholic and the drug addict harm only themselves by their behavior; the person who violates the rules of morality governing mans life in society harms not only himself, but everyone.

The main achievement of economics is that it has provided a theory of peaceful human cooperation. This is why the harbingers of violent conflict have branded it as a dismal science and why this age of wars, civil wars, and destruction has no use for it.

Economic knowledge necessarily leads to liberalism

Library of the Works of Ludwig von Mises”. Here is an article he wrote in 1951, some two years after his magnum opus Human Action appeared, where is lays out his case in a more popular form. The money sentences are “Economic theory has demonstrated in an irrefutable way that a prosperity created by an expansionist monetary and credit policy is illusory and must end in a slump, an economic crisis. It has happened again and again in the past, and it will happen in the future, too.

There is no such thing as a just and fair method of exercising the tremendous power that interventionism puts into the hands of the legislature and the executive.

The criterion of truth is that it works even if nobody is prepared to acknowledge it.