Private Property: Goods obtained via homesteading or voluntary exchange.
Voluntary: Any action that is performed without the threat of aggression.
Aggression: The INITIATION of the use of force.
Force(=Violence=Coercion): The occupation of one’s body or private property against his will.
Defense: The use of force in response to aggression.
Liberty: The absence of aggression.
Voluntaryism: The theory that defense is the only universally permissible (=moral) application of force.