Mahabharata 3.30.13

3.30.13

tasmādbalavatā caiva durbalena ca nityadā |
kṣantavyaṃ puruṣeṇāhurāpatsvapi vijānatā || 13 ||

If a weak man, persecuted by others, foolishly becometh angry towards men that are mightier than he, he then becometh himself the cause of his own destruction. And in respect of one who thus deliberately throweth away his life, there are no regions hereafter to gain. Therefore, O daughter of Drupada, it hath been said that a weak man should always suppress his wrath. And the wise man also who though presecuted, suffereth not his wrath to be roused, joyeth in the other world--having passed his persecutor over in indifference. It is for this reason hath it been said that a wise man, whether strong or weak, should ever forgive his persecutor even when the latter is in the straits. It is for this, O Krishna, that the virtuous applaud them that have conquered their wrath. Indeed, it is the opinion of the virtuous that the honest and forgiving man is ever victorious. Truth is more beneficial than untruth; and gentleness than cruel behaviour. How can one like me, therefore, even for the purpose of slaying Duryodhana, exhibit anger which hath so many faults and which the virtuous banish from their souls? They that are regarded by the learned of foresight, as possessed of (true) force of character, are certainly those who are wrathful in outward show only. Men of learning and of true insight call him to be possessed of force of character who by his wisdom can suppress his risen wrath. O thou of fair hips, the angry man seeth not things in their true light.