In consequence of his inoffensiveness and kindness, his righteousness, love of truth and energy, and his remembering the reverence that is due to thee, Yudhishthira patiently bears innumerable wrongs. Having bestowed on Duryodhana and Suvala’s son and Karna, and Dussasana the management of the empire, how canst thou hope for prosperity? He that is not served from the high ends of life by the aid of self-knowledge, exertion, forbearance and steadiness in virtue, is called wise.

In plain words: Vidura says Yudhishthira puts up with many wrongs because he is kind, honest, and respects his uncle. He asks how the king can expect good things after handing power to Duryodhana, Shakuni (Suvala's son), Karna, and Dussasana. Then he begins describing a wise person: someone whom self-knowledge, effort, patience, and goodness keep on the path to life's highest goals.