Ludwig von Mises on central planning vs. individual planning

The planner is a potential dictator who wants to deprive all other people of the power to plan and act according to their own plans. He aims at one thing only: the exclusive absolute preeminence of his own plan.

~ Ludwig von Mises, Planned Chaos, 1947

Mises on socialism vs. the market economy

Men must choose between the market economy and socialism. The state can preserve the market economy in protecting life, health, and private property against violent or fraudulent agression; or it can itself control the conduct of all production activities. Some agency must determine what should be produced. If it is not consumers by means of demand and supply on the market, it must be the government by compulsion.

~ Ludwig von Mises, Planned Chaos, p. 34