"Alfred: With respect, Master Wayne, perhaps this is a man you don't fully understand either. A long time ago, I was in Burma. My friends and I were working for the local government. They were trying to buy the loyalty of tribal leaders by bribing them with precious stones, but their caravans were being raided in a forest north of Rangoon by a bandit. So we went looking for the stones, but in six months, we never met anyone who traded with him. One day, I saw a child playing with a ruby the size of a tangerine. The bandit had been throwing them away."

"Bill Finger knew of Conrad Veidt because Bill had been to a lot of the foreign films. Veidt ... had this clown makeup with the frozen smile on his face (classic). When Bill saw the first drawing of the Joker, he said, 'That reminds me of Conrad Veidt in The Man Who Laughs. He said he would bring in some shots of that movie to show me. That's how that came about. I think in Bill's mind, he fleshed out the concept of the character."

"They've given many origins of the Joker, how he came to be. That doesn't seem to matter—just how he is now. I never intended to give a reason for his appearance. We discussed that and Bill [Finger] and I never wanted to change it at that time. I thought—and he agreed—that it takes away some of the essential mystery."

"Bill Finger and I created the Joker. Bill was the writer. Robinson came to me with a playing card of the Joker. That's the way I sum it up. [The Joker] looks like Conrad Veidt — you know, the actor in The Man Who Laughs, [the 1928 movie based on the novel] by Victor Hugo. [...] Bill Finger had a book with a photograph of Conrad Veidt and showed it to me and said, 'Here's the Joker'. Jerry Robinson had absolutely nothing to do with it, but he'll always say he created it till he dies. He brought in a playing card, which we used for a couple of issues for him [the Joker] to use as his playing card."

"Gotham TV Series (2014 - 2019)"

"If I weren't insane: I couldn't be so brilliant!"

"Joker (2019 film)"

"Joker: Folie à Deux"

"Batman Beyond: Return of the Joker"

"Batman (1989 film)"

"Incels are individuals who express frustration from perceived disadvantages to starting intimate relationships. Incel extremists idolize violent individuals like the Aurora movie theater shooter. They also idolize the Joker character, the violent clown from the Batman series, admiring his depiction as a man who must pretend to be happy, but eventually fights back against his bullies."

"Ladies and Gentlemen, Hobos and Tramps, Cross-eyed mosquitoes and bowlegged ants. I come before you, to stand behind you, to tell you a story I know nothing about. One bright morning in the middle of the night two dead fellows stood up to fight. They stood back to back, facing each other, drew their swords and shot one another. If you don't believe my lie, it's true, ask the blind lady on the corner, she saw it too."

"They could put me in a helicopter and fly me up into the air and line up the bodies head to toe on the ground in delightful geometric patterns like an endless June Taylor dancers routine — and it would never be enough. No, I don’t keep count. But you do. And I love you for it."

"You dirty rat! You killed my brother! My sister! My daughter! She's my sister and my daughter!"

"Lady, you're harder to kill than a cockroach on steroids"

"It's true, Batsy! I know everything! And kinda like the kid who peeks at his Christmas presents, I must admit, it's sadly anti-climactic. Behind all the sturm and batarang, you're just a little boy in a playsuit, crying for mommy and daddy. It'd be funny if it weren't so pathetic...... Oh, what the heck, I'll laugh anyway! HA! HA! HA! HA! HAAAA!"

"(to Batman) "Quick question. When the clock strikes twelve, do I get a little kiss?""

"(to Superman) "More powerful than a locomotive, and just about as subtle.""

"Rockabye Batsy, I'm getting free! Soon you'll be the one trapped inside me! So do take deep breaths, great lungfuls of fear! Soon Bats will be gone, and I will be here!"

"(Firefly) - "You still haven't told us how you're going to take over the underworld." (Jerome Valeska: "Proto-Joker") - "Who says I wanna do that? I'm an artist. I just wanna paint the town crazy. Once that happens, I could care less how you horribles rip this city apart.""

"The police just backed me up in a gunfight....Gotham has finally gone insane!! AHAHAHAHAHAHA!!!"

"Don't go into the light, bats! It's no fair! They won't let me in!"

"When I get out of here, I will write my name in blood on every street corner! I'll carve it on every corpse! I -- (stammers) NO ONE'S FORGETTING ME!"

"No, Bruce! Don't leave me! PLEASE!!"

"Yay! We're all going to Hell!"

"....I need you..."

"I am the Comeback King! The Clown Prince of Chaos! The Jester of Genocide!...You can't stop me."

"Oh, Bats! How very ME of you. Though I can see why you didn't tell him, after Jimbo's hysterical overreaction. Still, if you cared about Barbara the way that little sidekick of yours does, maybe she wouldn't have been kidnapped in the first place. They're star-crossed, Bats! Like me and you. Shame they're being torn apart thanks to your crusade. So let's recap. Barbara's dead. And let's face it, probably dead. You're lying to lover boy wonder about it, and dear old Jim's marched off on his lonesome to save the day. Not your best day at the office, Bats. Something on your mind? Come on, let Robin out of his cage. You can't force him to slave over your cure. Plus, if he gets himself killed out there, you won't have to tell him about Barbara. It's win-win! You think he's really gonna fix your nasty case of Joker-itis? Not a chance. I'm chronic, Brucie. I'm lingering."

"Can you remember when it was simple? Back in the old days, when it was just you, me, a regular war against crime? Well take a look, Bats. Things change. Now it's just war, with you standing right bang in the center. Of course, with any war, there are casualties. It's inevitable, unavoidable. Like death. Well, maybe not death, I seem to have sidestepped that one. Still, not all of us are so lucky."

"Who's gonna save Gotham now? Robin?! [laughs]"

"There's two things Lex forgot to tell you about me: I don't CARE what happens to the world, and I DON'T play nice with others!"

"Remember Talia? Of course you do. How could you forget a girl like that? All it took was one piece of lead to end your hopes of a happily ever after. You blamed me, of course, but you were wrong. You put her in my crosshairs, Bats. Sure, she didn't do herself any favors, but it was you. You see, people trust you. They believe in you. They follow you into your war, and you are about to get them all killed."

"Oh Bats, how I've missed you! All the subtlety and nuance of a napalm enema."

"That guy doesn't know you very well, now does he? What kind of super villain thinks that a handful of bullets to the stomach and a bunch of tanks will stop the Batman?"

"Get Ready for the Encore" [Manic Laughter]."

"(goes around the screen trying to find his way "in the dark") "What the...? Why has everything gone dark? Are we dying? We better not be dying, Bruce!""

"Off to see mom and pop in that great big county club in the sky!"

"He's no better than the creep who killed your parents."

"You of all people should know, there's nothing so cruel as memory.... the pointy biting little thunderbolts, unwanted party crashers, SCREAMERS through your synapses.. inescapable, unrelenting.... not at all friendly. You can't even escape into MADNESS!"

"Isn't it funny how one little encounter can cleave off little pieces of your past, deform your memories and persona until you rethink your whole identity — and as you realise how foolish it all is — your laughter reverberates off the walls of your own emptiness?"

"I've really got to hand it to Scarecrow. I've never been a fan of his concoctions up to now, but this batch, it's intoxicating. It really brings out the me in you."

"Bats? Bats?? BAAATS!?!"

"[to Batman] "Fresh off a kill and back for more, eh?""

"Come on, baby! Beat me 'til your knuckles bleed... And why quit there? You know there's only one way to stop me."

"[laugh] Stopped his hearth... [laugh] That IS funny... [laugh] Good one, Bats! [laugh] Oh, this is going to be FUN!"

"[after Batman has "killed" Bane] "Well, I'd love to stay and celebrate your victory, but I've got stockings to stuff, mistletoe to hang - and about fifteen skyscrapers to blow up before sunrise. Ciao." [leaves with a laugh]"

"If I weren't crazy, I'd be insane!"

"All aboard the Bane train!"

"You should take better care of yourself, Batsy. There's two of us in there!"

"If you actually let me finish a sentence, you might learn something! You might learn we're not so different. You might even learn something about yourself."