Detective Milton Arbogast: We’re always quickest to doubt people who have a reputation for being honest.

Norman Bates: You know what I think? I think that we’re all in our private traps, clamped in them, and none of us can ever get out. We scratch and we claw, but only at the air, only at each other, and for all of it, we never budge an inch.
Marion Crane: Sometimes, we deliberately step into those traps.
Norman Bates: I was born into mine. I don’t mind it anymore.
Marion Crane: Oh, but you should. You should mind it.

Norman Bates: She just goes a little mad sometimes. We all go a little mad sometimes. Haven’t you?

Norman Bates: Well, a son is a poor substitute for a lover.

Norman Bates: A boy’s best friend is his mother.

Norman Bates: I think I must have one of those faces you can’t help believing.

Hardware store customer: They tell you what its ingredients are, and how it’s guaranteed to exterminate every insect in the world, but they do not tell you whether or not it’s painless. And-and I say, insect or man, death should always be painless.

Norman Bates: Well I’m not a fool. And I’m not capable of being fooled! Not even by a woman.

Norman Bates: Uh-uh, Mother-m-mother, what is the phrase? She isn’t quite herself today.

Norman Bates: A hobby should pass the time, not fill it.