Mahabharata Santi Parva Chapter 89:2

Mahabharata Santi Parva (Rajadharmanusasana Parva) Chapter 89:2 Amongst those that are virtuous and possessed of wisdom, those that never retreat from battle, and those that do not reside in thy kingdom, those that are dependent on thee, and those that are thy ministers, as well as those that are independent of party, they that praise or blame thee should never be objects of disregard with thee, O Yudhishthira! No man, O sire, can succeed in earning the good opinion of all persons in the world. All persons have friends, foes, and neutrals, O Bharata!" "'Yudhishthira said, "Among persons all of whom are equal in might of arms and accomplishments, whence does one acquire superiority over all the rest, and whence does that one succeed in ruling over them?" "'Bhishma said, "Creatures that are mobile devour things that are immobile; animals again that have teeth devour those that have no teeth; wrathful snakes of virulent poison devour smaller ones of their own species. (Upon this principle), among human beings also, the king, who is strong, preys upon those that are weak. The king, O Yudhishthira, should always be heedful of his subjects as also of his foes. If he becomes heedless, they fall upon him like vultures (on carrion). Take care, O king, that the traders in thy kingdom who purchase articles at prices high and low (for sale), and who in course of their journeys have to sleep or take rest in forest and inaccessible regionsbe not afflicted by the imposition of heavy taxes. Let not the agriculturists in thy kingdom leave it through oppression; they, who bear the burthens of the king, support the other residents also of the kingdom.The gifts made by thee in this world support the gods, Pitris, men, Nagas, Rakshasas, birds, and animals. These, O Bharata, are the means of governing a kingdom and protecting its rulers. I shall again discourse to thee on the subject, O son of Pandu!