Uchiha Madara
When a man learns to love, he must bear the risk of hatred.

Pain / Nagato
"You think you're the only ones who matter. You think you can put off death. But that peace made you foolish and thoughtless. If you kill someone, someone else will kill you… this hatred binds us together."

"Those who do not understand true pain can never understand true peace."

"I want you to feel pain, to think about pain, to accept pain, to know pain."

Uchiha Itachi

"If you want to kill me, despise me, hate me, and live in an unsightly way... Run, and cling to life, and then some day, when you have the same eyes as I do, come before me."

"People live their lives bound by what they accept as correct and true. That's how they define "reality". But what does it mean to be "correct" or "true"? Merely vague concepts ... their "reality" may all be a mirage. Can we consider them to simply be living in their own world, shaped by their beliefs?"

Uzumaki Naruto

*When talking to Sai about saving Sasuke from Orochimaru*
"I don't care who I have to fight!
If he rips my arms out, I'll kick him to death!
If he rips my legs off, I'll bite him to death!
If he rips my head off, I'll stare him to death!
And if he gouges out my eyes, I'll curse him from the grave!
Even If i'm torn to shreds, I'm taking Sasuke back from Orochimaru!"

"The pain of being alone...is not an easy one to bear..why is it...that I can understand your pain? But...I already have many people who are important to me now...and I can't let you hurt any of them...even if I have to kill you!"