A quarter-century has passed since James Cameron'S Titanic premiered in theaters!

25 anni dopo, 1997'S Titanic still stands tall as one of the highest-grossing movies ever made, and director Cameron, 68, recently told Scadenza lui “can’t imagine that film” without its two leading stars in Leonardo DiCaprio e Kate Winslet.

“I think about that casting Leonardo [DiCaprio] and Kate [Winslet] in Titanic. Leo, the studio didn’t want him; I had to fight for him,” the director told the outlet during an interview about his career and his new movie, Avatar: La via dell'acqua.

“Kate really liked him,” the director said of DiCaprio, Ora 48. “And then Leonardo decided he didn’t want to make the movie. So then I had to talk him into it.”

Durante l'intervista, Cameron noted that Titanic “wouldn’t have been that film” if DiCaprio had decided not to take his role as Jack or if anything with the production had come together differently.

“You think at any one of those places, if that had really kind of frayed apart, it would have been somebody else and it wouldn’t have been that film,” ha detto all'outlet. “And I can’t imagine that film without him and without her.”

“So there’s a fragility to the whole process, there’s a fragility to success,” Cameron added. “You change one element and it doesn’t work.”

In un video career retrospective per GQ published in November, the director spilled on casting DiCaprio as Jack per Titanic, quale almost fell apart over the actor’s poor attitude during auditions.

“There was a meeting with Leo and then there was a screen test with Leo,” Cameron said, setting the scene. “The meeting was funny because I am sitting in my conference room, waiting to meet an actor. And I look around, and all the women in the entire office are in the meeting. They all wanted to meet Leo. It was hysterical.”

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The filmmaker said the first meeting went well and DiCaprio “charmed everybody” so he was asked back for a read with Winslet, who had already been cast. It did not go as smoothly. Almeno, not at first.

“So he came back a couple of days later, and I had the camera set up to record the video,” Cameron recalled. “He didn’t know he was going to test. He thought it was another meeting to meet Kate. Così ho detto, 'Va bene, we’ll just go in the next room, and we’ll run some lines and I’ll video it.’ E lui ha detto, ‘You mean, I’m reading?’ ho detto, ‘Yeah.’ ”

“Egli ha detto, 'Oh, I don’t read,’ ” Cameron continued. “I shook his hand and said, ‘Thanks for coming by.’ E lui ha detto, 'Attesa, aspettare, aspettare. If I don’t read, I don’t get the part? Proprio così?’ E io dissi, 'Oh, Sì. Avanti. This is a giant movie that is going to take two years of my life, and you’ll be gone doing five other things while I’m doing post-production. Così, I’m not going to f— it up by making the wrong decision in casting. Così, you’re going to read, or you’re not going to get the part.’ ”

DiCaprio reluctantly agreed to read and was indignant until the camera was rolling, Cameron claimed, but once he gave DiCaprio the go-ahead to read, l'attore “turned into Jack.”

“Kate just lit up, and they played the scene,” ha detto il regista. “Dark clouds had opened up, and a ray of sun came down and lit up Jack. Sono come, 'Va bene. He’s the guy.’ ”

Titanic is currently the eighth highest-grossing movie ever at the domestic box office. Top Gun: Maverick passed Titanic in agosto as it shot to the fifth-highest grossing movie of all time.

PEOPLE’s new special edition, Titanic: Leonardo DiCaprio, Kate Winslet and the Making of an Epic Love Story, is available now wherever magazines are sold.