Why do Libertarians think Mises was important?

Mises was able to demonstrate (a) that the expansion of free markets, the division of labor, and private capital investment is the only possible path to the prosperity and flourishing of the human race; (b) that socialism would be disastrous for a modern economy because the absence of private ownership of land and capital goods prevents any sort of rational pricing, or estimate of costs, and (c) that government intervention, in addition to hampering and crippling the market, would prove counter-productive and cumulative, leading inevitably to socialism unless the entire tissue of interventions was repealed.

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