Naruto Uzumaki: After everything you've done, don't you dare talk about peace and justice!
Pain: Then tell me what your goal is?
Naruto Uzumaki: I'm gonna kill you! And bring peace back to the Ninja World!
Pain: I see... That is noble of you. That is justice indeed. However... my family, my friends, my village... they suffered the same fate as this village by you Hidden Leaf Ninjas. How is it fair to only allow you people to preach about peace and justice?
Naruto Uzumaki: What are you talking about?
Pain: The Land of Fire and the Hidden Leaf had grown too big. To protect its national interests, it forced feudal clans to wage war against each other, and profited from it. Otherwise, the nation and the people of the villages would have starved. However, our little nation and its villages became the battlefields for the Great Nation's war. And each time, our nation was ravaged and laid to waste. After all the fighting subsided, things stabilized in the Great Nation. And our little nation was left to suffer the pain and misery.
[Naruto looks down]
Pain: You and I seek the same thing. We are trying to establish the peace that Jiraiya Sensei so desired. You and I are not different at all. We each act according to our own sense of justice. The justice I delivered to the Leaf Village is no different from what you are trying to do to me. The pain of losing something dear to you is the same. And both of us know that pain all too well. You have your justice... and I have mine.
Pain: We are both ordinary men, driven to seek vengeance under the banner of justice. However, if there is justice in vengeance, then justice will only breed more vengeance. And trigger a cycle of hatred. We are living in the middle of such a phenomenon right now. We know what the past has been and we can predict what the future will be. That is history as we know it. So we cannot help but believe that human beings are incapable of understanding each other.
[Flashbacks of conflicts are shown]
Pain: The world of the ninja is ruled by hatred.