And I know, amongst those who behave themselves most bravely in the present war, some whose manners are so gentle, obliging, and just, that they will certainly stand firm, whatever event Heaven is preparing for us. I am of opinion that it properly belongs to kings only to quarrel with kings; and I laugh at those spirits who, out of lightness of heart, lend themselves to so disproportioned disputes; for a man has never the more particular quarrel with a prince, by marching openly and boldly against him for his own honour and according to his duty; if he does not love such a person, he does better, he esteems him. And notably the cause of the laws and of the ancient government of a kingdom, has this always annexed to it, that even those who, for their own private interest, invade them, excuse, if they do not honour, the defenders. But we are not, as we nowadays do, to call peevishness and inward discontent, that spring from private interest and passion, duty, nor a treacherous and malicious conduct, courage; they call their proneness to mischief and violence zeal; 'tis not the cause, but their interest, that inflames them; they kindle and begin a war, not because it is just, but because it is war. A man may very well behave himself commodiously and loyally too amongst those of the adverse party; carry yourself, if not with the same equal affection (for that is capable of different measure), at least with an affection moderate, well tempered, and such as shall not so engage you to one party, that it may demand all you are able to do for that side, content yourself with a moderate proportion of their, favour and goodwill; and to swim in troubled waters without fishing in them. The other way, of offering a man's self and the utmost service he is able to do, both to one party and the other, has still less of prudence in it than conscience. Does not he to whom you betray another, to whom you were as welcome as to himself, know that you will at another time do as much for him? He holds you for a villain; and in the meantime hears what you will say, gathers intelligence from you, and works his own ends out of your disloyalty; double-dealing men are useful for bringing in, but we must have a care they carry out as little as is possible.