UPDATE: Stan Lee's official cause of death has been revealed

The passing of Stan Lee, aged 95, has seen the comic book and film industry shaken to its core. He was a legend, and there will be no one like Stan ever again.

In the early 1960s, Lee came close to quitting comics altogether, dispirited at the lack of success he was experiencing at the company then called Timely Comics. It was the encouragement of his wife Joan that kept him writing, and in 1961 he and Jack Kirby co-created the super-team known as the Fantastic Four. Though nobody knew it at the time, they were making history. Just shy of 60 years later, the strength of the Marvel Cinematic Universe itself - a big-screen box office juggernaut that's made over $15 billion worldwide - stands as testament to the creativity of Marvel's greatest heroes; Stan Lee, Jack Kirby, and Steve Ditko.

Related: Read A Page Of Stan Lee's 1980s Doctor Strange Movie Script

In June this year, Stan Lee was inducted into the famous Science-Fiction and Fantasy Hall of Fame at the Museum of Pop Culture (MoPOP). Lee is the only comic book figure whose cultural impact has been recognized in this way, with him honored alongside the likes of C.S. Lewis, J.R.R. Tolkien, Gene Roddenberry, and Terry Pratchett. With everybody in the entertainment industry - be they Marvel, DC or wider Hollywood - paying tribute to Stan Lee, it's clear the comic book and film industry has lost a legend who can never be replaced.

Stan Lee's Work Can Never Be Matched In Volume Or Influence

Stan Lee was one of the most prolific writers in comic book history. He was utterly, unshakably committed to his craft; when power cuts in New York in 1965 sent other Marvel writers home, he settled down to write by candlelight. It's almost impossible to work out just how many characters Lee created; in part, that's because he pioneered a new approach to writing comics, which became known as the Marvel Method. This involved the writer and the artist working together in such a close partnership that comic book historians have argued over who should get the credit for various characters for literally decades. Wherever you draw the line, though, all that matters is that between 1961 and 1964 Lee created (or co-created) heroes like the Fantastic Four, Ant-Man and the Wasp, the Hulk, Spider-Man, Iron Man, Doctor Strange, the X-Men, Daredevil and the Inhumans. In 1965, though, Lee changed his focus slightly. The growth of the Marvel universe slowed, with Lee instead prioritizing building a cohesive shared universe, establishing relationships between the characters so readers would relate to the Marvel brand as a whole rather than to specific individual comics. It's a model that will be familiar to any moviegoer; it's the same one Marvel Studios took decades later, in 2008, when they launched the Marvel Cinematic Universe. So not only did Lee create all these tremendous Marvel characters, but he also fashioned the idea of the shared universe model.

Lee's countless superheroes endure because he insisted on treating them as characters in their own right. He told the story of men who would be gods, everyday people who were thrust into a world of superheroism, and whose personal struggles reflected so intimately the issues his readers battled with themselves. Lee was as interested in Peter Parker as in Spider-Man, in Tony Stark as in Iron Man; he fashioned characters who his readers could identify with, and who could point the reader onwards in their own moral journeys.

Meanwhile, for all society tended to dismiss the comic book medium, Lee insisted on viewing it as something important. As he explained in an editorial in Avengers #74, "It seems to me that a story without a message, however subliminal, is like a man without a soul." He didn't ignore Vietnam, campus unrest, the civil rights movement, or the growing women's rights campaigns. Instead, Lee dared to write stories - and design characters - who stood at the cutting edge of social change. That's best illustrated by Black Panther. It's impossible to overstate how revolutionary this hero was when he made his debut in 1966, two years after the passing of the Civil Rights Act, with many States resisting the push for equality. Lee dared to fashion a black superhero who was the equal of the Fantastic Four, and whose African nation possessed advanced technology that even impressed Mr. Fantastic.

Related: Why It Took So Long to Get a Black Panther Movie

Comics Will Never Be As Big (Or A Community) As When Stan Lee Ruled

Stan Lee's comics had a unique degree of both cultural relevance and prominence, signified neatly by the fact so many of his characters have become firmly established superhero franchises. Ironically enough, although society back in the '60s tended to look upon the comic book boom with a degree of condescension and scorn, these were the comics that were absorbed into American culture. Nowadays, comic books are a niche industry, supported by a distribution model that focuses on select retailers rather than wide distribution. The Marvel Comics of 2018 is stood firmly in Lee's shadow, and so many of their new ideas are really "Legacy Heroes" who riff on his classics - characters like Jane Foster's Thor, Miles Morales's Ultimate Spider-Man, Ironheart, or Nadia Pym's Wasp. The comic book industry in 2018 is rightly viewed as significant in terms of literary merit, but it actually doesn't have a half as much cultural influence as Lee's books.

When did Marvel Comics lose its way? There's a lot of wider contextual changes, but it all grew as it became increasingly distanced from Stan Lee. Lee's whimsical style defined Marvel's brand, and he built a community of readers around himself. To be a Marvel comic book reader was to feel a kinship with Stan the Man, to consider him a friend. It meant every Marvel fan felt they had something - no, someone - in common. Meanwhile, Lee welcomed others into the fold. The second and third generations of Marvel writers were fans who had grown up reading Lee's books, and they arrived eager to work with him. There was a sense in which Marvel felt like a family, with Stan Lee as the "man of the house." Inevitably, as the years passed and Lee became significantly less involved in the day-to-day running of Marvel Comics, that sense of community lessened.

The sad truth is that the modern comic book industry simply couldn't create another Stan Lee; a man who single-handedly defines an entire company, who becomes the public face of comic books and draws the community together around him. His influence can never be duplicated.

Page 2 of 2: Why Stan Lee Can't Be Repeated

Stan Lee Was A Unique Personality and Celebrity Beyond Comics

Back in the '60s, to read a Marvel comic book was to meet Stan Lee. He pioneered the "Bullpen Bulletins," features that ran in the back of all Marvel comics and served as a platform for Lee's editorializing. A savvy businessman, Lee understood that Marvel would benefit from a sense of personal engagement with readers. He became known for a friendly, albeit authoritative voice, and swiftly came up with a series of catchphrases; "Face Front, True Believers," he would challenge, and often ended his notes with phrases like "Nuff said" and "Excelsior!" It was just a little thing, but it created a bond of friendship between the editor and his readers.

As the comic book boom began, Lee transformed himself into a celebrity, renowned for his tongue-in-cheek humor. By the late 1960s, he was touring college campuses giving lectures to eager fans. Lee essentially became a one-man Marvel marketing machine, a position he was ideally suited to. As cultural historian Bob Batchelor writes in Stan Lee: The Man Behind Marvel:

"If a generation of teen and college-aged readers hoped to shape him into their leader, Lee would gladly accept the mantle and be their gonzo king. Fashioning this image in a lecture circuit that took him around the nation, as well as within the pages of Marvel's books, Lee created a persona larger than his publisher or employer."

Related: The Best Marvel Comics Storylines Of All Time

In recent years, that persona manifested itself on the big screen in a succession of much-loved cameos. Although Lee had appeared in previous Marvel shows, the tradition really began in 2000's X-Men, and it didn't take long for Lee to become synonymous with Marvel in the minds of moviegoers. That's so much the case that Lee can cameo in films starring characters he didn't create, and in some cases never even wrote. Perhaps the most touching was for 2016's X-Men: Apocalypse - in which he got to appear alongside his beloved wife Joan, who passed away last year.

Stan Lee Believed in the Potential of Superheroes When No One Else Did

Iron Man, Hulk, Cap, Thor, and Black Widow corner Loki with Hawkeye pointing his arrow in The Avengers

It's easy to forget that there was a time when Hollywood considered the idea of Marvel movies and TV shows to be something of a joke. A billionaire industrialist who jets around in a suit of armor? A man dressed in the US flag who tosses a shield like a Frisbee? The ideas were dismissed out of hand - but that didn't stop Stan Lee. He spent decades of his life in Hollywood, campaigning for networks and studios to embrace the potential of the superhero franchise. Although he had some successes - most notably involving the Hulk, Spider-Man and the X-Men - by the '90s it seemed as though the age of the superhero was dying. The bottom fell out of the comic book industry, and Marvel came close to bankruptcy.

Ironically, that near-bankruptcy proved to be the beginning of a new superhero craze. Marvel was forced to sell off the film rights for their characters, and a couple of studios began to take the risk of producing Marvel films. In 1998, the surprising success of New Line's Blade made Hollywood sit up and take note. It was followed by Fox's X-Men in 2000, and by Spider-Man in 2002. Lee was actually an important figure in these early Marvel movies; he met with director Bryan Singer during preproduction of X-Men, and encouraged him to ditch previous scripts and trust his own instincts.

The success of the Marvel Cinematic Universe stands as testimony to the fact that Stan Lee was right. He had always believed that the characters and concepts he had fashioned had the power to dominate Hollywood, a faith that for decades had seemed unlikely to be fulfilled. Now, though, the MCU has become one of the greatest and most significant cinematic brands of all time. Lee's creations - characters like Iron Man and Thor, Doctor Strange and Spider-Man - are household names, with A-list actors vying to play them (while other studios are desperate to get a piece of the superhero action). What's more, the popularity of the MCU led to a rightful resurgence in Lee's own brand; those tremendous cameos introduced everyday moviegoers to his face and form, and made him one of Hollywood's hottest properties. A look at social media today will see so many of Hollywood's biggest names speaking out in his honor, remembering the times when they had the privilege to meet him and shake his hand.

Related: Stan Lee's 10 Little-Known Non-MCU Cameos

The passing of Stan Lee is undoubtedly a turning point in pop culture history. And yet, it's important not to overstate the sorrow of it; this was a man who deserves to be celebrated as well as mourned. Lee had the rare privilege of seeing all his dreams fulfilled, of living to see his creations transform the world. The last comic book story he wrote for Marvel was for the 75th Anniversary Special, a retelling of the very first story he wrote for Timely; as Marvel's Tom Brevoort observed, "So Stan’s first Marvel story was also his last Marvel story." Meanwhile, Lee has died after the MCU has celebrated its 10-year anniversary, with plans for years' worth of stories in the works. Former Marvel editor Roy Thomas spoke to him less than 48 hours before he passed away, and told Bleeding Cool, "I know, from my recent phone conversations with him, that he was more than ready to leave this Earth... I consider myself so very lucky to have known and worked with him for so many years… one of the most important mythmakers of the 20th century."

Excelsior.

More: Stan Lee's Confirmed Cameos In Upcoming Marvel Movies