"'He abused me, he beat me, he defeated me, he robbed me' - in those who harbor such thought hatred will never cease. 'He abused me, he beat me, he defeated me, he robbed me' - in those who do not harbor such thoughts, hatred will cease. For hatred does not cease by hatred at any time; hatred ceases by love, this is an old rule. The world does not know that we must all come to an end here, but those who know it, their quarrels cease at once." - Buddha
I don't know why it matters that Buddha said that, as opposed to some random schmuck, and given the age of these texts, it could well have been some random schmuck, not to say that Gautama himself was not essentially some random schmuck saying good things, but for some reason it does seem to matter.