"What is the basic, the essential, the crucial principle that differentiates freedom from slavery? It is the principle of voluntary action versus physical coercion or compulsion."

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People who denounce the free market and voluntary exchange, and are for control and coercion, believe they have more intelligence and superior wisdom to the masses. What's more, they believe they've been ordained to forcibly impose that wisdom on the rest of us. Of course, they have what they consider good reasons for doing so, but every tyrant that has ever existed has had what he believed were good reasons for restricting the liberty of others.

— Walter E. Williams