The Mahabharata - pg. 87

Krishna was delighted to hear these words and said: "What else can Arjuna, born of Kunti in the Bharata race, advise? Death comes to all, the hero as well as the sluggard; but the noblest duty of a kshatriya is to be true to his race and faith, and overcoming his foes in righteous battle, to win glory."
Finally Yudhishthira assented to the unanimous opinion that their duty lay in slaying Jarasandha.
This conversation has a curiously modern ring about it and shows that powerful men in ancient days used very much the same specious reasoning as now.