Robert Nozick Quote

Some people steal from others, or defraud them, or enslave them, seizing their product and preventing them from living as they choose, or forcibly exclude others from competing in exchanges. None of these are permissible modes of transition from one situation to another.

Ch. 7 : Distributive Justice, Section I, The Entitlement Theory, p. 152 - Anarchy, State, and Utopia (1974)