"[to Chad and Orihime] Your transformation is not a disease. You were just given the key to the door in front of you. There's no need to know the cause. No need for sorrow or sadness. What comes next is up to you. You can use your keys to open the door...or lock it tight. And if you do choose to open it... You can still decide not to pass through."

"I placed this blade of grass in my mouth thinking I'd look cool. But it must be poison 'cause ith makinth ma mouth numb."

"Think about it this way: a person picks up a sword when he's trying to protect something. Perhaps it's your life or your social status, maybe a reputation, a loved one, or personal beliefs. The motives may be completely different, but in the end, it's the same desire to protect something."

"*To Kuchiki Rukia* Are you any different!? You sacrificed yourself to save me that time!! At that time were you thinking about complicated stuff like "this is my Shinigami duty"!? That's not what sacrificing yourself is! At the very least... I'm different! I haven't accepted any commitment. If things get bad I might run away... since I'm not a good enough person to be able to sacrifice my life for total strangers. But unfortunately I'm also not trash that can live happily without paying back his debts!"

"[to Szayel Aporro Grantz] Immaculate being... Was it? In this secular existence, perfection is an illusion, regardless of those who utter the contrary. This is the reality. Common man seeks it out, they strive to achieve it, as if it were some tangible thing... But... The fact of the matter is, perfection is a hollow shell. It is devoid of any substance. I spit on perfection. Perfection, after all, implies you've reached the summit. No trial and error, no ability to conceptualize. An omniscient being would have no need for such superfluous things... Am I making myself clear? For people who dabble in the sciences, such as ourselves, perfection would make us obsolete. Many magnificent things have been, and will continue to come into existence... And yet every last one of them will fall short of perfection's finish. Our function as men of science relies on their many shortcomings. Then, and only then, can we apply the fruits of our labor. To put it simply... As soon as you began spouting that nonsense about being an immaculate being... your fate was sealed. How dare you call yourself a man of science?"

"I don't believe that an absolute power really exists in any world. Power is unstable. It changes constantly. Small differences will always appear, as one has between you and I. So the one who widens that gap will be the winner!"

""Control"... you say? When you stand before me... that word holds no meaning. Bankai. Senbonzakura Kageyoshi."