"From this moment, all official oaths will contain the following phrase; I will value neither my life nor the lives of my children any more highly than I do the emperor and of his sister Drusilla."

"Teresa Ann Savoy - Drusilla"

"I've always been interested in the Roman Empire, since after all like so many of us I'm a child of the American Empire, and empires tend to be more like one another than different from one another. In a sense, we're looking in a mirror, and we're seeing not just an emperor 2000 years dead, but we see ourselves."

"I think there is a Caligula in everybody, which after all was a pretty normal average young man, put in an abnormal and extraordinary situation, and I think that if I can communicate to an audience that in this monster there is something that is present in all of us, but for one reason or another, generally for lack of opportunity or some ethical sense stops us, therefore we are not in action Caligula. But I'm trying to go to something much deeper, which is in our dreams we are Caligula, and what, after all, is a film, what is celluloid but dreams made into a kind of shadow of reality?"

"I am interested in all that is Rome, even down to the length of a toga."

"Bruno Brive - Gemellus"

"Paula Mitchell - Subura Singer"

"The film was like being on an acid trip. It has its good moments and it has its bad moments and is a fantastical journey. It went where angels fear to tread. In many scenes, you're going: "Oh my God, I can't believe we're going to actually shoot this!" It was sort of horrific, but it was also wonderful."

"It has an irresistible mixture of art and genitals in it."

"Lori Wagner - Agrippina"

"Guccione hijacked the film and sandbagged everybody."

"Guido Mannari - Macro"

"Osiride Pevarello - Giant"

"Anneka Di Lorenzo - Messalina"

"I am Rome. Wherever I am, Rome is, and there is the senate and the people of Rome."

"Many of the terrible things that we are going to show in this movie are indeed from history, or indeed from the only two sources that we have; Suetonius and Tacitus, and they may be true or they may not be true. But whatever they are, they are representative of something that those who are interested in history have known for 2000 years and which, until now, have never been [...] divulged to the general public."

"I do recall one particular night shoot… We were called to the set at four o'clock in the afternoon. As usual, nothing was ready. They'd built a set of Tiberius's grotto, on three acres, and were assembling all of the extras and background. The producers worriedly asked if I would go into Peter's trailer (he was playing Tiberius) and go through the lines with him, which we did few times. And then he told me the most remarkable story – whether it is true or not I have no idea – about his grave-robbing Etruscan tombs. He said the best way to find Etruscan jewellery and artefacts was to find the drains in the tombs, and very gingerly sift through them with your fingers because, as the bodies decompose, all of the artifacts deposit themselves into the channels. The thought of Peter O'Toole on his hands and knees in an Etruscan catacomb makes for a lovely image. We spent hours and hours in this trailer. He was smoking … it certainly wasn't tobacco. By the time we got onto the set, 12 hours had passed. We couldn't believe our eyes: the set was covered with people engaging in every sexual perversion in the book. We were totally bemused. Peter would start off his speech, "Rome was but a city..." then pause, look around, and say to me: "Are they doing the Irish jig over there?" I'd look over and there would be two dwarves and an amputee dancing around some girls splayed out on a giant dildo. This went on quite a few times."

"Leopoldo Trieste - Charicles"

"Adriana Asti - Ennia"

"Paolo Bonacelli - Chaerea"

"Mirella Dangelo - Livia"

"Giancarlo Badessi - Claudius"

"Helen Mirren - Caesonia"

"John Steiner - Longinus"

"Richard Parets - Mnester"

"I made Caligula for the masses, not for a few self-appointed elitists. Besides, every time I read a lousy review I wanted the pleasure of knowing it cost the author $7.50 to write it."

"[We] had to remove a lot of the material that Gore had originally written into the script, so the film is now somewhat more sensual than the original version. In fact, just to give you one example, in the beginning - other than between Caligula and his sister, Drusilla - there were practically no heterosexual scenes at all. Every sex scene Vidal wrote was homosexual in content."

"I promised that Caligula would fundamentally change the theatergoing public's perception of motion pictures. I said that it would foment changes within the industry itself. I really shot my mouth off, but I meant every word of it, and I still do."

"I never intended to involve myself, certainly not in the actual shooting, until I saw the way Brass had mishandled and brutalized the film's sexuality. No matter what instructions I gave him, no matter how many times we discussed a scene and agreed on its interpretation, Brass would go out of his way to do the opposite. When I was in Rome and present at the studio, he would work within the parameters we had originally agreed. The minute I left Rome or even turned my back, he would go thundering off on his own."

"I don't see the film as being pornographic, and I certainly didn't set out to make a pornographic movie. It's a question of definitions. To me, pornography is a work of bad art, as opposed to good art. And I don't think Caligula qualifies under the heading of bad art. It was a huge commercial undertaking, and at the same time we wanted to make a serious statement. We've done with cinematic images what so many authors and historians have done with words - we have re-created a complex life-style that flourished before Christ and the Judeo-Christian philosophy came into being."

"The fact that we have used celebrated movie personalities to make a film with sexually explicit passages is probably the source of the controversy. People talk about the violence, of course, but it's easier and more sophisticated to say that you're shocked by the violence rather than the sex."

"When Rome was just a city, we were just citizens, known to one another, you see. We were frugal, good, disciplined and dignified. The Romans I rule are not what they were. They lust. They lust for power and pleasure, money, the wives of other men. Oh yes, I am a true moralist, and stern as any Cato. Fate chose me to govern swine. In my old age, I am become a swineherd."

"Every senator believes himself to be a potential Caesar. Therefore every senator is guilty of treason, in thought if not in deed. The senate is the natural enemy of any Caesar, "Little Boots". They offer to prove any law I made before I made it. I said: 'What if I go mad? What then?' No answer. They were born to be slaves."

"Let me tell you how ridiculous it got. When it came to casting certain senators and noblemen, [Brass] would deliberately recruit them from a pool of ex-convicts, thieves, and political anarchists that he happened to keep in touch with. That was his sense of humor."

"At the insistence of the senate and the people of Rome, I accept humbly the highest office of our great republic."

"I am nursing a viper in Rome's bosom."