Yudhishtir: Anger is the invincible enemy. Covetousness constitutes a disease that is incurable. He is noble who desires the well-being of all creatures, and he is ignoble who is without mercy.
Who is truly happy? What is the greatest wonder?
Yudhishtir: He who has no debts is truly happy. Day after day countless people die. Yet the livings wish to live forever. O Lord, what can be a greater wonder?
For a full narrative on the story, the Sanskrit to English verse translation, the full list of the Yaksha’s questions and Yudhishtir’s answer here is a link.