"Does my complexion look unhealthy to you? Is my face pale? Do I look sickly to you? Do I look like I'm not long for this world? Do I look like I'm about to die? Wrong, wrong, wrong, wrong. I'm a living being who's infinitely close to perfection."

"The one thing I hate is "change". Changes in circumstances. Changes in body. Changes in emotion. In most cases. Every change is "degradation". It is decline. The one thing I like is "permanence". If something doesn't change for an eternity. It's in a perfect state."

"We must kill every last one so they never sully my sight again. This isn't a complicated task yet you still failed. What is the meaning of this? You proudly report having killed a Hashira but you left three Demon Slayers alive. Why didn't you finish them off? I sent you because I trusted you'd get the job done, Akaza... [...] You disappoint me. If you took a blow from a swordsman who isn't even a Hashira... then Upper Rank 3 has indeed fallen."