III. In the second place, it is generally known that it is not the ORIGIN only of a just war which is to be viewed as the principal source of many of our rights, but there may be causes growing out of that war which may give birth to additional rights. As in proceedings at law, the sentence of the court may give to the successful litigant other rights besides those belonging to the original matter of dispute. So those who join our enemies, either as allies or subjects, give us a right of defending ourselves against THEM also. So too a nation engaging in an unjust war, the injustice of which she knows and ought to know, becomes liable to make good all the expences and losses incurred, because she has been guilty of occasioning them. In the same manner those powers, who become auxiliaries in wars undertaken without any reasonable grounds, contract a degree of guilt and render themselves liable to punishment in proportion to the injustice of their measures. Plato approves of war conducted so far, as to compel the aggressor to indemnify the injured and the innocent. IV. In the third place, an individual or belligerent power may, in the prosecution of a lawful object, do many things, which were not in the contemplation of the original design, and which in THEMSELVES it would not be lawful to do. Thus in order to obtain what belongs to us, when it is impossible to recover the specific thing, we may take more than our due, under condition of repaying whatever is above the real value. For the same reason it is lawful to attack a ship manned by pirates, or a house occupied by robbers, although in that ship, or that house there may be many innocent persons, whose lives are endangered by such attack. But we have had frequent occasion to remark, that what is conformable to right taken in its strictest sense is not always lawful in a moral point of view. For there are many instances, in which the law of charity will not allow us to insist upon our right with the utmost rigour. A reason for which it will be necessary to guard against things, which fall not within the original purpose of an action, and the happening of which might be foreseen: unless indeed the action has a tendency to produce advantages, that will far outweigh the consequences of any accidental calamity, and the apprehensions of evil are by no means to be put in competition with the sure hopes of a successful issue. But to determine in such cases requires no ordinary penetration and discretion. But wherever there is any doubt, it is always the safer way to decide in favour of another's interest, than to follow the bent of our own inclination. "Suffer the tares to grow, _says our divine teacher_, least in rooting up the tares you root up the wheat also."