In this world, wherever there is light – there are also shadows. As long as the concept of winners exists, there must also be losers. The selfish desire of wanting to maintain peace causes wars, and hatred is born to protect love.
Man seeks peace, yet at the same time yearning for war... Those are the two realms belonging solely to man. Thinking of peace whilst spilling blood is something that only humans could do. They're two sides of the same coin... to protect something... another must be sacrificed.
When a man learns to love, he must bear the risk of hatred. - Madara Uchiha (Masashi Kishimoto)