Sara: I shot Captain Connor, sir.
Roosevelt: You've always had the courage to do what needs to be done. Your father would be proud of you.

You are not alone in your sorrow, and there's no shame in grieving for those you love.

Roosevelt [to Kreizler]

Kreizler: It's over. This wretched investigation is over.
Moore: Laszlo, give yourself a few days before ...
Kreizler: Before what? Before I get you killed too?
Moore: You weren't responsible for her death.
Kreizler: Who then, if not me?

How many have there been?

Sara

Still trying to be a detective, are you, Miss Howard?

Connor [to Sara]

Moore: What if I were the killer?
Joseph: No offense, Mr. Moore, but there's more a chance of pigs flying.

Moore: I'd feel much safer if there were a couple of roundsmen [policemen] present.
Sara: Not after they'd shot you in the back.

Byrnes: Men, good or bad, don't follow what they don't respect.
Roosevelt: And what is it you teach them to respect?
Byrnes: I taught them to respect the badge and the uniform and all that they stand for. What they do not respect is weakness.
Roosevelt: Weakness is hiding in the past, old man.

It ain't fair [Connor's] living like that, and Mary's in the ground.

Stevie [to Cyrus]

[Beecham's] no man to cross.

Bartender

"Haply I may remember, And haply may forget." -- Christina Rossetti

Moore

Lucius: You expect us to believe you?
Doyle: I expect you to believe me over Sambo and some half-witched table boy. Look at you, a couple of hebes playing at cops.

The Alienist Quotes

Moore: I'm not a reporter. I'm an illustrator.
Conner: Then that's two good reasons for you not to be going up there.

John: What can't possibly wait, Stevie?
Stevie: He said he needs you.