There is one good thing about Marx: he was not a Keynesian.

Unlike every other person and institution in society, government obtains its revenue from coercion, from taxation.

The great non sequitur committed by defenders of the State, is to leap from the necessity of society to the necessity of the State.

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

Positivism eliminates any kind of natural law principle - for example, that there are economic laws which can be transgressed only at your peril. With positivism, there is a tendency to leap into ad hoc economic theory.

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.