The water was innocent, Caroline. It wasn't rough seas so much as an unsteady sailor.

John [about his brother's drowning]

Sara: They don't have the appetite to approach matters from this new perspective of yours: the why rather than the what.
Kreizler: Every new thinker is condemned at first by those for whom change is more terrifying than the murder of children.

Sara: They were friends, my father and yours.
Alice Roosevelt: Is that why you got the job, then?
Sara: I like to think not.

Roosevelt: Captain Connor, at long last the city has policemen it can be proud of.
Connor: You think sticking medals on roundsmen with nary a hair on their balls is going to earn the respect of the department? If you want to give out medals, I know men that are deserving.

John: His family grows by the day.
Kreizler: Who are you talking about?
John: J.P. Morgan. Every young lady he's seen with claims to be his niece.

Kreizler: Our weaknesses sometime serve us better than our strengths.
Sara: I'm surprised to hear you admit you have a weakness.
Kreizler: I was speaking metaphorically.

My God! Do you never tire of the sound of your own voice?

John [to Kreizler]

John: Gentlemen, there is a lady present.
Sara: Enough, John. I am perfectly capable of hearing what needs to be said.

Roosevelt: Are you suggesting you should conduct a parallel investigation?
Kreizler: Yes, if you want to prevent the murder of more children.

Marcus: Don't wait up, Mama. We have police business.
Mother: It doesn't smell like police business.
Lucius: She means you smell like a 10-cent whore.
Marcus: How would you know?

Tessie: Will there be gentlemen present?
Sara: There will be colleagues present.
Tessie: Colleagues are gentlemen too. All the more reason to make an impression.

[The killer] needs to feed his hunger like an addict. He can't go very long without killing again.

Kreizler

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.