Sir William then goes on to say, "another principle of law, of a less politic nature, but equally general in its reception and direct in its application, forbids this sort of communication as fundamentally inconsistent with the relation at the time existing between the two countries, and that is the total inability to sustain any contract by an appeal to the tribunals of the one country, on the part of the subjects of the other. In the law of almost every country, the character of an Alien Enemy carries with it a disability to sue, or to sustain, in the language of the civilians, a _persona standi in judicio_. The peculiar law of our own country applies this principle with great rigour--the same principle is received in our Courts of the Law of nations; they are so far _British_ courts, that no man can sue therein who is a subject of the Enemy, unless under particular circumstances that _pro hac vice_ discharge him from the character of an Enemy, such as his coming under a flag of truce, a cartel, or a pass, or some other act of public authority that puts him in the Queen's peace _pro hac vice_. But otherwise he is totally _Ex lex_! Even in the case of ransom bills which were contracts, but contracts arising out of _the laws of war_, and tolerated as such, the Enemy was not permitted to sue _in his own person_, for the payment of the ransom bill; the payment was enforced by an action brought by the imprisoned hostage in the courts of his own country, for the recovery of his freedom. A state in which contracts cannot be enforced is not a state of legal commerce." [Sidenote: No Trade permitted except under Royal licence.] "Upon these and similar grounds, it has been the established rule of this court, confirmed by the judgment of the supreme court, that a trading with the enemy, except under a Royal Licence, subjects the property to confiscation. "Where the Government has authorised, under sanction of an Act of Parliament, a _homeward trade_ from the enemy's possessions, but has not specifically protected an _outward_ _trade_ to the same, though intimately connected with that homeward trade, and almost necessary to its existence, the rule has been enforced, where strong claim not merely of convenience, but almost of necessity, excused it on behalf of the individual. "It has been enforced, where cargoes have been laden before the war, but where the parties have not used all possible diligence to countermand the voyage after the first notice of hostilities.[23]