Leon, Black Cat :

I hate illogical adults. Due to their actions, everyone died. Starting a war on their own. Not bothering to think about the feelings of those they left behind. Every day was like hell. We were barely able to survive. That’s why I wanted power. Power to change the world… And to build a future for the ones who were left behind.  I wanted to create a happy world. Was I wrong?

Lelouch, Code Geass:

Suzaku, my hands are tainted dark with blood. If you too wish to fight me, so be it. I welcome it with open arms. We’re friends after all…muahahahahaha!

Lelouch, Code Geass:

Ever since that day, I’ve been craving destruction and loss. Yes, before creation there must be destruction. If my soul stands in my way, then I’ll toss it aside. Yes, I have no choice but to move forward. Therefore…

Shirley’s Rewritten Memories, Code Geass

Shirley: Um, did you lose a family member too?

Lelouch: No, not a family member. A friend. Yes…probably…a precious one.

Shirley: I see.

Lelouch: I only realized it for the first time, after losing her, how often her smile saved me. We can no longer argue or laugh like that together. 

Shirley: You loved her didn’t you?

Lelouch: I don’t know anymore.

Shirley: The morning will come. Up until now, I didn’t know what I came here for. But maybe I came to put an end to something. Even though there are a lot of things you can’t forget, and a lot of sad things too, the morning will still come right? So, there’s no need to overdo it by bearing them in your heart.

Lelouch: That’s right. I feel the same. Thanks for all you have done.

Suzaku, Code Geass

Things from now on have nothing to do with you! Your existence is a mistake! You don’t belong in this world! I will save Nunnally…!

Lelouch vi Britannia, Code Geass R2

This is also a punishment for you. You will be the defender of justice and wear a mask forever. You will no longer be able to live as Kururugi Suzaku. You will sacrifice all of your own happiness for the world…eternally.