Incident to this point is, for a state to have those laws or customs which may reach forth unto them just occasions (as may be pretended) of war; for there is that justice imprinted in the nature of men, that they enter not upon wars (whereof so many calamities do ensue), but upon some, at the least specious grounds and quarrels. The Turk hath at hand, for cause of war, the propagation of his law or sect, a quarrel that he may always command. The Romans, though they esteemed the extending the limits of their empire to be great honor to their generals when it was done, yet they never rested upon that alone to begin a war. First, therefore, let nations that pretend to greatness have this, that they be sensible of wrongs, either upon borderers, merchants, or politic ministers; and that they sit not too long upon a provocation: secondly, let them be pressed,[347] and ready to give aids and succors to their confederates, as it ever was with the Romans; insomuch, as if the confederate had leagues defensive with divers other states, and, upon invasion offered, did implore their aids severally, yet the Romans would ever be the foremost, and leave it to none other to have the honor. As for the wars, which were anciently made on the behalf of a kind of party, or tacit conformity of estate, I do not see how they may be well justified: as when the Romans made a war for the liberty of Græcia; or, when the Lacedæmonians and Athenians made wars to set up or pull down democracies and oligarchies; or when wars were made by foreigners, under the pretence of justice or protection, to deliver the subjects of others from tyranny and oppression, and the like. Let it suffice, that no estate expect to be great, that is not awake upon any just occasion of arming. Nobody can be healthful without exercise, neither natural body nor politic; and, certainly, to a kingdom, or estate, a just and honorable war is the true exercise. A civil war, indeed, is like the heat of a fever; but a foreign war is like the heat of exercise, and serveth to keep the body in health; for, in a slothful peace, both courages will effeminate and manners corrupt. But, howsoever it be for happiness, without all question for greatness, it maketh to be still, for the most part, in arms; and the strength of a veteran army (though it be a chargeable business) always on foot, is that which commonly giveth the law, or, at least, the reputation amongst all neighbor states, as may well be seen in Spain,[348] which hath had, in one part or other, a veteran army, almost continually, now by the space of sixscore years.