"There hasn't been a single piece of paper written in the history of mankind that could serve as a deterrent to a Pearl Harbor. I sometimes wonder why we haven't learned that lesson by now. Every 20 years or so we have to pick ourselves up off the floor bleeding and pay for that mistake. Those mistakes are delivered to us C.O.D. by peace loving men. And bought and paid for with the lives of other men. Men in uniform."

"I'll make you two promises: a very good steak, medium rare, and the truth, which is very rare."

"I think the signing of a nuclear disarmament pact with the Soviet Union is at best an act of naivete, and at worst an unsupportable negligence. We've stayed alive because we've built up an arsenal, and we've kept the peace because we've dealt with an enemy who knew we would use that arsenal. And now we're asked to believe that a piece of paper will take the place of missile sites and Polaris submarines, and that an enemy who hasn't honored one solemn treaty in the history of its existence will now, for our convenience, do precisely that. I have strong doubts, gentlemen."

"I'm suggesting Mr President, there's a military plot to take over the Government of these United States, next Sunday..."

"[introducing his dog Trimmer to Col. Casey] Trimmer is a very political dog. He doesn't have many principles, but he's loyal to his friends."

"Hugh Marlowe - Harold McPherson"

"Burt Lancaster - General James Mattoon Scott"

"Kirk Douglas - Colonel Jiggs Casey"

"Sharon & Susan (twin daughters)"

"Nancy Kulp - Miss Grunecker"

"Maggie (wife)"

"Crahan Denton - Hecky"

"Maureen O'Hara - Maggie McKendrick"

"Joanna Barnes - Vicky Robinson"

"Charlie Ruggles - Charles McKendrick"

"Brian Keith - Mitch Evers"

"Una Merkel - Verbena"

"Arthur Gould-Porter — Freddy, the Bookseller"

"Miss Inch: [reading from index cards] Welcome to Camp Inch, new arrivals. I am your supreme commander here. My name is... [turns to the next card and continues reading] Miss Inch. [frowns, looks back at the previous card in confusion, then re-reads the new one] Oh, yes, Miss Inch."

"Cathleen Nesbitt - Louise McKendrick"

"Hayley Mills - Susan Evers/Sharon McKendrick"

"David Opatoshu — Mr. Jacobi"

"Gisela Fischer — Dr. Koska"

"Mort Mills — Farmer"

"Leo G. Carroll - Reverend Dr. Mosby"

"Günter Strack — Professor Karl Manfred"

"Carolyn Conwell — Farmer's Wife"

"Julie Andrews — Sarah Sherman"

"Lila Kedrova — Countess Kuchinska"

"Hansjörg Felmy — Heinrich Gerhard"

"Paul Newman — Professor Michael Armstrong"

"Farmer: [describing Armstrong's contact] You'll recognize him. He has red hair which is not his own, and his name is Hugo. But don't give him that money until after you've landed."

"It tears you apart with suspense!"

"Tamara Toumanova — Ballerina"

"Suspense! Action! Surprise!"

"[offering Armstrong a cigar] Havana. Your loss, our gain."

"Don't look so worried, my darling girl. You are quite safe with me. I am not communistical."

"Professor Gustav Lindt: You told me nothing. You know nothing. I forbid you to leave this room!"

"Against all the evidence, Michael, I'd say you had a very unscientific mind."

"Wolfgang Kieling — Hermann Gromek"

"Prof. Olaf Hengström: Well, I hope you're looking forward to our lunch. This hotel has an excellent smorgasbord. You know, Miss Sherman, I've often wondered why one of the leading hotels in Denmark should be called the "Hotel of England" in the French language. I suppose it's the ideal title for an international hotel."

"Ruth McDevitt - Miss Abbey Inch"

"We will produce a defensive weapon that will make all offensive nuclear weapons obsolete, and thereby abolish the terror of nuclear warfare."

"Ludwig Donath — Professor Gustav Lindt"

"I've often wondered if you professionals know what you're looking for when you go in and steal secret papers."

"I was able to combine mathematical logic with romantic inconsistency."

"It takes a scientist to pick a scientist's brain."

"Frances Feist — Mrs. Thomas"

"Sidney Berger — John Linden"

"Art Ellison — Minister"