"Of my five older siblings, two died on the first mission, then two more on the second. Then on the sixth mission, the last one... Died as well. I felt sad, somewhat, but more than that, I felt ashamed of their incompetence."

"I thought I told you. If you see your allies losing, that's your chance. Don't step between them. Take the enemy down from behind. And if the enemy's so strong, you can't even do that, then just watch your ally be killed. That's what it means to be Special Forces."

"I'll show you a real assassination. No...Maybe you won't even be able to see it."

"If you see your allies losing, that's your chance. Don't step between them. Take the enemy down from behind. And if the enemy is so strong you can't even do that, then just watch your ally be killed. That's what it means to be Onmitsukidō."

"[To BG9] And you thought I would leave it that way forever? After my battle with Yoruichi-sama, I honed my Shunkō to completion And since then, I have pushed my ability to the limits, taking the technique further still. My Shunkō is "wind". I have perfected a method of causing the Reiatsu I release to flow like a vortex around my body indefinitely. As such, once I have activated my Shunkō, I am now able to maintain it for as long as proves necessary. You have my thanks. If you had not stolen my Bankai, I may never have honed my Shunkō to this level of mastery."

"[To Hitsugaya, after stabbing Hinamori] Aww...You found her. Sorry, I didn't want you to find out this way...No. I should have chopped her into little pieces and hidden them away where you would never find them."

"I had no intention of deceiving anyone. It's just that none of you could understand...My true self."

"Don't use such strong words -- It makes your weakness all the more apparent."

"Admiration is the emotion furthest from comprehension."

"It's very difficult for me to step on an ant without crushing it."

"'No longer the Aizen you know,' hm...? I'm afraid you've been deluded, Abarai-kun...The 'Aizen Sōsuke' you knew never existed to begin with."

"In my eyes, there is no difference between wiping away one speck of dust or two."

"Oh? I thought I severed your body from the waist-down, but...It seems the cut was too shallow."

"Thus there were no breakthroughs, as other researchers were bound by obstacles such as ignorance and morals."

"No one stands on the top of the world. Not you, not me, not even gods. But the unbearable vacancy of the throne in the sky is over. From now on...I will be sitting on it."

"[After Gin offers to kill some Arrancars] No thanks, for that would be boring."

"Good evening, Espada. There has been an enemy attack. But first...Let us brew some tea."

"No matter what may happen...As long as you walk by my side...There shall be no enemy that can stand before us."

"[to Grimmjow, as the Sexta tries to leave a meeting to hunt down intruders] Grimmjow, I'm thankful for your intentions, but I've not yet finished speaking. Please go back to your seat... Well? I didn't hear your answer...Grimmjow Jaegerjaquez. [Aizen releases an extraordinary amount of spirit energy, forcing Grimmjow to his hands and knees, panting heavily.] I see you understand, Grimmjow."

"[To Orihime, after she had being taken from Ichigo once again] A girl like you should smile more often. Overcast skies blot out the sun, and that always brings people's spirits down. So why not let the sun shine...For just a while longer?"

"[To Barragan, before he was recruited by Aizen] Isn't it ironic, king of Hueco Mundo? Dressed in black and poised to attack, you look just like a shinigami."

"To trust in another is the same as to rely upon that person. Reliance is for the weak. It is of no use to us. It is the nature of all living things to find some being greater than themselves and place their trust in that being, following it blindly. In order to escape from the pressure of that trust, those beings seek a still greater entity in which to believe, and those greater beings too seek still greater, still stronger beings to follow. This is how all kings come to be, and this is how all Gods are born. Do not trust in me yet, Hirako Shinji. I will take my time to teach you the nature of the God whom you face. Then, you shall believe."

"Seek not beauty in battle. Seek not beauty in death. Consider not your own life. If you wish to protect that which must be protected, then strike while your opponent's back is turned."

"[To Kisuke Urahara] Those are the words of a defeated man!! A victor must speak not of the current state of the world, but of how it should rightfully be!"

"[To Shunsui Kyōraku] I must say... You truly are an entertaining man. Would I like to breathe fresh air, you ask? Would that be the fresh air of a Soul Society being summarily crushed by Yhwach?"

"[To Yhwach regarding their battle] This is not about benefit. My only purpose has always been to crush all who seek to control me."

"Yhwach, the world that you desired to create may indeed have been devoid of fear. However, in a world without the fear of death, men could not face that fear and seek out hope. Certainly, they could keep walking onward by merely living, but that would be very different from walking onward while conquering their own fears. That is why we give the act of walking onward a special name. We call it 'courage'."

"Sit Upon the Frozen Heavens! Hyōrinmaru!!"

"Bankai! Daiguren Hyōrinmaru!"

"[to Gin Ichimaru] If you make Hinamori shed even one drop of blood, I'll kill you."

"No, not yet, now that you've made me this serious. Regret as much as you damn well want!!"

"Dummy. I'm not gonna dwell on what happened forever. All that junk... it's the furthest thing on my mind. You should especially quit worrying about it and get some more sleep. Hurry up and get rid of your Panda eyes, got it?"

"Stand back? [To Kira after Gin asked him to stand back] No, Kira...Run. Run until you're out of my sight, and keep running. Otherwise...I can't guarantee you won't get dragged into this and be killed."

"[to Momo, smiling slightly] How many times do I have to tell you? It's not Hitsugaya-kun, it's Hitsugaya-taichō."

"[To Ichigo after he calls him 'Tōshiro'] Bastard, you said that on purpose, didn't you?"

"We are all like fireworks. We climb, shine, and always go our separate ways and become further apart. But even if that time comes, let's not disappear like a firework, and let's continue to shine...Forever."

"[to Luppi]Hyourinmaru is the strongest of all ice-type Zanpakutoes. Your weapon may have eight arms, but mine is all the water in the atmosphere! Sennen Hyourou!! [causes several pillars of ice to form, before using them to crush Luppi] Sorry. Eight wasn't enough."

"I didn't come here to fight! I came here to hack at you violently!"

"I swear on the pride of the Quincy, I will kill you!"

"Ah, Kurosaki. I'm glad to see you've finally realized the importance of a cape."

"[to an arrogant projectile-specialist Shinigami] Apparently, on this side, "ultimate master" means a windbag with diarrhea of the mouth."

"Calling me a coward, eh? At least say it so I can hear it..."