“What is this "heart"? If I tear open that chest of yours, will I see it there? If I smash open that skull of yours, will I see it there?~ulquiorra”

“Hearts, you say? You Humans are always so quick to speak of such things. As though you carry your hearts in the very palms of your hands. But this eye of mine perceives all. There is nothing that it overlooks. If this eye cannot see a thing, then it does not exist. That is the assumption under which I have always fought. What is this "heart"? If I tear open that chest of yours, will I see it there? If I smash open that skull of yours, will I see it there?”

“I envy because of the heartI glutton because of the heartI covet because of the heartI am prideful because of the heartI sloth because of the heartI rage because of the heartBecause of the heart,I lust for everything about you."- Ulquiorra (resurrection)”

“Even if you rise up a thousand times, your side will never achieve victory.~Ulquiorra”

“That's right... I never felt a sense of superiority because I could see spirits. And I never once thought that I could make a living or help someone with it. I just longed for a life where I couldn't see them. And I finally got what I always wanted.”

“I know that. What's your point?”

“I don't have a method of stepping into the depths of your heart without getting it dirty." -Kuchiki Rukia”