“- Charles Van Doren: Dad, I can't simply just tell them the truth.
- Mark Van Doren: Can't tell them the truth? Why on earth not?
- Charles Van Doren: Because it's complicated.
- Mark Van Doren: Complicated?”
Ralph Fiennes - Charles Van Doren
Paul Scofield - Mark Van Doren

“Whatever path you decide to take in this life, be true to yourself.”
Michelle Yeoh - Yu Shu Lien

“- Kira Watanabe: I can no longer stand by, and watch you destroy their lives. I'm going to tell Chas the truth, and there's not a thing you can do to stop me.
- Coco LaBouche: Except throw out on the curb, au revoir.”

Julia Kato - Kira Watanabe
Susan Sarandon - Coco LaBouche

- Dimitri Moisevitch: I want to play a game with you, Dr. Floyd.
- Dr. Heywood Floyd: I don't have time for games.
- Dimitri Moisevitch: This is a good game. It's called "the truth". For two minutes, I will tell only the truth, and so will you.
Dana Elcar - Dimitri Moisevitch
Roy Scheider - Dr. Heywood Floyd

“- HAL 9000: I understand now, Dr. Chandra. Thank you for telling me the truth.
- Dr. R. Chandra: You deserve it.”

Douglas Rain - HAL 9000
Bob Balaban - Dr. R. Chandra