“- Jack: Women are easier, not physically, they're just easier to work with. More cooperative.
- Verge: To kill, you mean?
- Jack: If you like. Mr. Sophistication believes in that theory.
- Verge: So... Mr. Sophistication is the theoretician?”
Matt Dillon - Jack
Bruno Ganz - Verge

“I pieced together the photos of every murder and I laid them out chronologically. That red line right there indicates where his killing became erratic and inexplicable. All you've gotta do is set up a null hypothesis and try and prove it. And when you can't prove it, that means your original hypothesis must be true.”

Chris Marquette - Oliver

“- Mr. Taggart: We've no guarantee that these theories of yours are workable.
- Thomas A. Edison: Well, most electricity is theory yet.”
Gene Lockhart - Mr. Taggart
Spencer Tracy - Thomas A. Edison

“He had a theory that if you should find one perfect thing, or place or person, you should stick to it.”

Joan Fontaine - Mrs. de Winter

“As much as I enjoyed your wild theories the truth is far less complex.”

Timothy Dalton - Simon Skinner