"Don't cry. Don't despair. Now's not the time for that. I know you're devastated. Your family was massacred, and your sister became a demon. I know it's painful. I know you want to scream. I get it. If only I'd gotten here a half-day sooner, your family might not have ended up dead. But there's no way to turn back time. Feel the rage. The powerful pure rage of not being able to forgive will become your unswerving drive to take action!"
—Giyuu Tomioka thinking about Tanjiro's situation
"Humans... are to be protected."
—Sakonji Urokodaki
"Muzan, you should not be allowed to exist."
—Tanjiro Kamado
"I hate myself more than anyone. I always think I have to get my act together, but I end up cowering, running away, sniveling. I want to change. I want to be a competent person."
—Zenitsu Agatsuma
"Better watch out! Cause' ready or not, HERE I COME!!"
—Inosuke Hashibira
"The bond between Nezuko and me... cannot be... severed by anyone!"
—Tanjiro to Rui
"If you can't tell the difference between good demons and bad ones, then you don't deserve to be a Hashira!"
—Tanjiro Kamado to Sanemi
"I wish I could stay here forever. I wish I could turn around and go back. By right, I should've been living like this forever. Right here. If none of this had happened... they'd all be alive and well now. And Nezuko would've lived in the sunlight, under a blue sky. If none of this had happened... If none of this had happened... I should be here making charcoal every day. I never would've laid my hand on a sword. If none of this had happened... If none of this had happened... But I've lost them now. [...] I can never go back. Sorry! I'm sorry, Rokuta! We can never be together anymore. But I'll always think of you, okay? I'll be thinking of you all. There are lots of things to thank you for. Lots of things to be sorry for! But I will never forget you! No matter what, my heart will always be with you!"'
—Tanjiro while departing the dream world.
"Don't run away! Don't run away, you coward! Don't run away! The Demon Slayer Corps is always fighting you demons in the dark of the night where you have the advantage! That's right, us flesh-and-blood humans! Our wounds won't close up that quickly. And we cannot regenerate a limb once lost! Don't run away, you bastard! You bastard! You coward! Rengoku is way more amazing than you! He's stronger! Rengoku didn't lose! He didn't let anybody die! He fought to the end! He protected them to the end! You're the one who lost! It's Rengoku who won!"
—Tanjiro taunting Akaza after the latter fled to avoid the sun.
"I know what right and wrong is! Those who appreciate my talent is the right, those who don't and denounce me is the wrong!"
—Kaigaku about his abilities.
"What do you find so entertaining? What's so amusing about this? What do you take life for, exactly? How can you forget?"
—Yoriichi to Muzan
