Mbh 12.103.4c

When foes are unseen, divine chastisement should be invoked upon them; when seen, the army, consisting of four kinds of forces, should be moved.[312] The king should first use the arts of producing disunion, as also those of conciliation. When the time for each particular means comes, that particular means should be applied. At times, the king should even prostrate himself before a powerful foe. It is again desirable that acting heedfully himself, he should seek to compass the victor's destruction when the latter becomes heedless. By prostrating one's self, by gift of tribute, by uttering sweet words, one should humble one's self before a more powerful king. One should (when the occasion for such acts comes) never do anything that may arouse the suspicions of one's powerful foe. The weaker ruler should, under such circumstances, carefully avoid every act that may awaken suspicion. A victorious king, again, should not trust his vanquished foes, for they that are vanquished always remain wakeful. There is nothing, O best of deities, that is more difficult of accomplishment than the acquisition of prosperity, O ruler of the immortals, by persons of a restless disposition. The very existence of persons of restless disposition is fraught with danger. Kings should, therefore, with close attention, ascertain their friends and foes. If a king becomes mild, he is disregarded. If he becomes fierce, he inspires people with dread. Therefore, do not be fierce. Do not, again, be mild. But be both fierce and mild. As a rapid current ceaselessly eats away the high bank and causes large landslips, even so heedlessness and error cause a kingdom to be ruined. Never attack many foes at the same time. By applying the arts of conciliation, or gift, or production of disunion, O Purandara, they should be ground one by one. As regards the remnant, (being few in number,) the victor may behave peacefully towards them.