You don't need a treaty to have free trade.

The state has typically been a device for producing affluence for a few at the expense of many.

The greatest danger to the State is independent intellectual criticism.

No one may threaten or commit violence ('aggress') against another man's person or property. Violence may be employed only against the man who commits such violence; that is, only defensively against the aggressive violence of another. In short, no violence may be employed against a non-aggressor. Here is the fundamental rule from which can be deduced the entire corpus of libertarian theory.

There can be no truly moral choice unless that choice is made in freedom; similarly, there can be no really firmly grounded and consistent defense of freedom unless that defense is rooted in moral principle. In concentrating on the ends of choice, the conservative, by neglecting the conditions of choice, loses that very morality of conduct with which he is so concerned. And the libertarian, by concentrating only on the means, or conditions, of choice and ignoring the ends, throws away an essential moral defense of his own position.

Briefly, the State is that organization in society which attempts to maintain a monopoly of the use of force and violence in a given territorial area; in particular, it is the only organization in society that obtains its revenue not by voluntary contribution or payment for services rendered but by coercion.

One of the most important features of our economic resources is their scarcity: land, labor, and capital goods factors are all scarce, and may all be put to various possible uses. The free market uses them 'productively' because the producers are guided, on the market, to produce what the consumers most need: automobiles, for example, rather than buggies.