Mbh 3.29.1c

Even one who hath abandoned the excellent virtues of his own order, it is certain, indulgeth in wrath (if behaveth properly). If fools, of mind without light, transgress in every respect, how, O faultless one, can one like me transgress (like them)? If amongst men there were not persons equal unto the earth in forgiveness, there would be no peace among men but continued strife caused by wrath. If the injured return their injuries, if one chastised by his superior were to chastise his superior in return, the consequence would be the destruction of every creature, and sin also would prevail in the world. If the man who hath ill speeches from another, returneth those speeches afterwards; if the injured man returneth his injuries: if the chastised person chastiseth in return; if fathers slay sons, and sons fathers and if husbands slay wives, and wives husbands; then, O Krishna, how can birth take place in a world where anger prevaileth so! For, O thou of handsome face, know that the birth of creatures is due to peace! If the kings also, O Draupadi, giveth way to wrath, his subjects soon meet with destruction. Wrath, therefore, hath for its consequence the destruction and the distress of the people. And because it is seen that there are in the world men who are forgiving like the Earth, it is therefore that creatures derive their life and prosperity. O beautiful one, one should forgive under every injury. It hath been said that the continuation of species is due to man being forgiving. He, indeed, is a wise and excellent person who hath conquered his wrath and who showeth forgiveness even when insulted, oppressed, and angered by a strong person. The man of power who controleth his wrath, hath (for his enjoyment) numerous everlasting regions; while he that is angry, is called foolish, and meeteth with destruction both in this and the other world.